Snarge

Snarge (pronounced snn-arj)

(1) In military & civil aviation, slang, the remains of a bird after it has collided with an airplane (ie bird strike), originally of impacts with turbine engines but latterly applied also to residue left on wings, fuselages etc.

(2) By adoption, the remains of birds and insects left on the windscreens of trains, cars, motorcycle fairings etc,

Early 2000s (probably): A portmanteau word, a blend of sn(ot) + (g)ar(ba)ge.  Snot (used here in the usual sense of “mucus, especially that from the nose”) was from the Middle English snot & snotte, from the Old English ġesnot & snott, from the Proto-West Germanic snott & snutt, from the Proto-Germanic snuttuz (nasal mucus), from the same base as snout and related to snite.  It was cognate with the North Frisian snot (snot), the Saterland Frisian Snotte (snot), the West Frisian snotte (snot), the Dutch snot (snot), the German Low German Snött (snot), the dialectal German Schnutz (snot), the Danish snot (snot) and the Norwegian snott (snot).  Trans-linguistically, “snot” is commendably consistent and its other uses (a misbehaving (often as “snotty”) child; a disreputable man; the flamed-out wick of a candle all reference something unwanted or undesirable).  That said, snot (mucus) is essential for human life, being a natural, protective, and lubricating substance produced by mucous membranes throughout the body to keep tissues moist and act as a barrier against pathogens and irritants like dust and allergens, working to trap foreign particles; it also contains antimicrobial agents to fight infection.  So, when “out-of-sight & out-of-mind” it’s helpful mucus but when oozing (or worse) from the nostrils, it’s disgusting snot.

Garbage (waste material) was from the late Middle English garbage (the offal of a fowl, giblets, kitchen waste (though in earlier use “refuse, that which is purged away”), from the Anglo-Norman, from the Old French garber (to refine, make neat or clean), of Germanic origin, from the Frankish garwijan (to make ready).  It was akin to the Old High German garawan (to prepare, make ready) and the Old English ġearwian (to make ready, adorn).  The alternative spelling was garbidge (obsolete or eye dialect).  Garbage can be used of physical waste or figuratively (ideas, concepts texts, music etc) judged to be of poor quality and became popular in computing, used variously to mean (1) output judged nonsensical (for whatever reason), (2) corrupted data, (3) memory which although allocated was no longer in use and awaiting de-allocation) or (4) valid data misinterpreted as another kind of data.  Synonyms include junk, refuse, rubbish, trash & waste.  Charlie Chaplin (1889–1977) used “Herr Garbage” as the name of the character who in The Great Dictator (1940) represented Dr Joseph Goebbels (1897-1975; Nazi propaganda minister 1933-1945).  Snarge is a noun and no derived forms have ever been listed but a creature which has become snarge would have been snarged and the process (ie point of impact) would have been the act of snarging.  Snarge is inherent the result of a fatality so an adjective like snargish is presumably superfluous but traces of an impact which may not have been fatal presumably could be described as snargelike or snargesque.

Dr Carla Dove at work in the Smithsonian's Feather Identification Laboratory, Washington DC.

The patronymic Dr Carla Dove (b 1962) is manager of the Feather Identification Laboratory at the Smithsonian Institution’s National Museum of Natural History in Washington DC where she heads a team identifying the types or species of birds that collide with military and civil aircraft.  She calls snarge “a term of art” (clearly she’s of the “eye of the beholder” school) and notes that although the scientific discipline of using snarge to determine the species involved in bird strikes began at the Smithsonian in 1960, the term doesn’t seem to have been coined there and its origin, like much slang with a military connection, is murky.  Although a 2003 article in Flying Safety magazine is sometimes cited as the source of the claim the word was “invented at the Feather Identification Laboratory”, Dr Dove is emphatic the staff there “borrowed it” from preparators (the technicians who prepare bird specimens for display or other uses by museums).  It certainly seems to have been in general use (in its specialized niche in military & aviation and wildlife safety circles) by at least the early-to-mid 2000s and the zeitgeisters at Wired magazine were in 2005 printing it without elaboration, suggesting at least in their editorial team it was already establish slang.  So, it may long have been colloquial jargon in museums or among those working in military or civil aviation long before it appeared in print but there no documentary evidence seems to exist.

The Feather Detective: Mystery, Mayhem, and the Magnificent Life of Roxie Laybourne (2025) by Chris Sweeney.

The origin of the scientific discipline is however uncontested and the world’s first forensic ornithologist was the Smithsonian’s Roxie Laybourne (1910–2003).  In October, 1960, a Lockheed L-188 Electra flying as Eastern Airlines Flight 375 out of Boston Logan Airport had cleared the runway by only a few hundred feet when it flew into a flock of birds, the most unfortunate of which damaged all four engines, resulting in a catastrophic loss of power, causing the craft to nosedive into Boston Harbor, killing 62 of the 72 aboard.  Although the engines were turbo-props rather than jets, they too are highly susceptible to bird-strike damage.  At the time, this was the greatest loss of life attributed to a bird-strike and the FAA (Federal Aviation Authority) ordered all avian remains be sent to the Smithsonian Institution for examination.  There, Ms Laybourne received  the box of mangled bone, blood & feathers and began her investigation, her career taking a trajectory which would include not only the development of protocols designed to reduce the likelihood of bird strikes damaging airliners but also involvement with the USAF (US Air Force) & NASA (National Aeronautics and Space Administration).  Additionally, her work with the FBI (Federal Bureau of Investigation) and various police forces proved forensic ornithology could be of use a diagnostic tool in crime-solving; her evidence helping to convict murderers, kidnappers and poachers.  In 2025, journalist Chris Sweeney published The Feather Detective: Mystery, Mayhem, and the Magnificent Life of Roxie Laybourne, a vivid telling of the tale of a woman succeeding in a world where feminism had not yet wrought its changes.

Snarge on the nosecone of a Cessna Citation, Eisenhower Airport, Wichita, Kansas, July 2021.  The dent indicates the point of impact, the airflow holding the corpse in place.  By the time of landing, the leaked body fluids had congealed to act as a kind of glue.

The study of aviation bird strikes is obviously a specialized field but snarge has come also to be used in the matter of insect deaths, specifically what has come to be called the “windscreen phenomenon” (also as “windshield phenomenon” depending on linguistic tradition).  What that refers to is the increasingly common instances of people reporting they are seeing far fewer dead insects on the windscreens of their cars, many dating the onset of the decline to the late 1990s and the most common explanations offered for this are (1) climate change, (2) habitat loss and (3) the increasing use (or potency) of pesticides.  Individual observations of one’s windscreen now tending to accumulate less snarge than in years gone by is of course impressionistic and caution must be taken not to extrapolate the existence of a global trend from one piece of glass in one tiny part of the planet: what needs to be avoided is a gaboso (the acronym for Generalized Association Based On Single-Observation (also as the derived noun & verb) which is the act of taking one identifiable feature of someone or something and using it as the definitional reference for a group (it ties in with logical fallacies).  However, the reports of increasingly snargeless windscreens were widespread and numerous so while that didn’t explain why it was happening, it did suggest that happening it was.

There was also the matter of social media platforms which have meant the volume of messages about a particular topic in the twenty-first century is not comparable with years gone by.  It’s simply impossible to calculate the extent to which these mass-market (free) platforms have operated as an accelerant (ie a force-multiplier of messaging) but few doubt it’s a considerable effect.  Still, it is striking the same observations were being made in the northern & southern hemispheres and the reference to the decline beginning in the late 1990s was also consistent and a number of studies in Europe and the US have found a precipitous drop in insect populations over the last three decades.  One interesting “quasi theory” was the improved aerodynamic efficiency of the modern automobile meant the entomological slaughter was reduced but quickly aeronautical engineers debunked that, pointing out a slippery shape has a “buffer zone” very close to the surface which means "bugs" have a greater chance of being sucked-in towards the speeding surface because of the differential between negative & positive pressure.  However, on most older vehicles, the “buffer zone” could be as much as 3 feet (close to a metre) from the body.  A bug heading straight for the glass would still be doomed but the disturbed air all around would have deflected a few

Lindsay Lohan with Herbie in Herbie: Fully Loaded (2005).

Herbie was a 1963 Volkswagen Type 1 (Beetle, 1938-2003) and despite the curves which made it look streamlined, its measured Cd (drag coefficient) was typically around 0.48-0.50, some 8% worse than contemporary vehicles of comparable frontal area.  What that meant was its buffer zone would extend somewhat further than the “New Beetle” (1997-2011) which had a Cd between 0.38-0.41, again not as good as the competition because it was compromised by the need to maintain a visual link with the way things were done in 1938.  On the 1963 models (like Herbie) the flat, upright windscreen created significant drag and was obviously a good device for “snarge harvesting” but the later curved screen (introduced in 1973 with the 1303) probably didn’t spare many insects.

Dr Manu Saunders' graphic example of insect snarge on a windscreen during the 2010 "locust plague" in western NSW (New South Wales), Australia, April 2010.

Dr Manu Saunders is a Senior Lecturer in Ecology and Biology and the School of Environmental and Rural Science in Australia’s UNE (University of New England) and she pointed out that “anecdata is not scientific evidence” and just because anecdotes are commonly presented as “evidence of global insect decline” (the so-called “insectageddon”), that doesn’t of necessity make locally described conditions globally relevant.  The problem she identified was that although there have been well-conducted longitudinal studies of snarge on windscreens using sound statistical methods, all have used data taken from a relatively small geographical area while around the planet, there are more than 21 million km (13 million miles, (ie more than 80 round trips to the Moon) of “roads”).  Dr Saunders does not deny the aggregate number of insects is in decline but cautions against the use of one data set being used to assess the extent of a phenomenon with a number of causal factors.

Still snarge-free: The famous photograph of the 25 917s assembled for inspection outside the Porsche factory, Stuttgart, 1969.  The FIA’s homologation inspectors declined the offer to test-drive the 25 which was just as well because, hastily assembled (secretaries, accountants and such drafted in to help), some of were capable of driving only a short distance in first gear.

Fortunately for Porsche, in 1969, although the decline in global insect numbers may already have begun, they were still buzzing around in sufficient numbers to produce the snarge which provided the necessary clue required to resolve the problem of chronic (and potentially lethal) instability which was afflicting the first 917s to be tested at speed.  In great haste, the 917 had been developed after the Fédération Internationale de l'Automobile (the FIA; the International Automobile Federation and world sport's dopiest regulatory body) “relaxed” the rules which previously had set a threshold of 50 identical units for cars classified as Group 4 (5 litre (305 cubic inch)) sports cars, reducing this to a minimum of 25.  What that meant was Porsche needed to develop both a car and a twelve cylinder engine, both items bigger and more complex than anything they’d before attempted, things perhaps not overly challenging had the typical two years been available but the factory needed something which would be ready for final testing in less than half the time.  Remarkably, they accomplished the task in ten months.

Porsche 917 LH Chassis 001 in the livery of the IAA (Internationale Automobil-Ausstellung (International Automobile Exhibition)) used for the Frankfurt Motor Show.

The brief gestation period was impressive but there were teething problems.  The fundamentals, the 908-based space-frame and the 4.5 (275 cubic inch) litre air-cooled flat-12 engine (essentially, two of Porsche’s 2.25 (137 cubic inch) litre flat-sixes joined together) were robust and reliable from the start but, the sudden jump in horsepower (HP) meant much higher speeds and it took some time to tame the problems of the car’s behaviour at high-speed.  Aerodynamics was then still an inexact science and the maximum speed the 917 was able to attain on Porsche’s test track was around 180 mph (290 km/h) but when unleashed on the circuits with long straights where over 200 mph (320 km/h) was possible the early 917s proved highly unstable, the tail “wandering from side-to-side” something disconcerting at any speed but beyond 200 mph, frightening even for professional race drivers.

On Mulsanne Straight, Le Mans: The slippery 917 LH (left) which proved "unsafe at high speed" (left) and the (slightly) slower 917 K (right) which, in the hands of experts), was more manageable.

The instability needed to be rectified because the 917 had been designed with "a bucket of Deutsche Marks in one hand and a map of the Le Mans circuit in the other" and these were the days before the FIA (Fédération Internationale de l'Automobile (International Automobile Federation and world sport's dopiest regulatory body)) started insisting chicanes be spliced into any straight where high speeds beckoned and the Mulsanne Straight at Le Mans was then an uninterrupted 6 km (3.7 mile) straight line.  There, the test results and slide-rule calculations predicted, the 917s would achieve in excess of 360 km/h (224 mph).  Serendipitously, physics and nature combined to show the team where the problem lay: After one alarming high speed run, it was noticed that while the front and central sections of the bodywork were plastered with bloodied snarge, the fibreglass of the rear sections remained a pristine white, the obvious conclusion drawn that while the airflow was inducing the desired degree of down-force on the front wheels, it was passing over the rear of body, thus the lift which induced the wandering.  Some rapid improvisation with pieces of aluminium and much duct tape (to this day a vital tool in the business) to create an ad-hoc, shorter, upswept tail transformed the behaviour and was the basis for what emerged from the factory's subsequent wind-tunnel testing as the 917 K (K for Kurzheck (short-tail).  The rest is history.

Dodge Public Relations announces the world now has "spoilers".  Actually they'd been around for a while but, as Dodge PR knew, until it happens in America, it hasn't happened.

What happened to the 917 wasn’t novel.  In 1966, Dodge had found the slippery shape of its new fastback Charger had delivered the expected speed on the NASCAR ovals but it came at the cost of dangerous lift at the rear, drivers’ graphically describing the experience at speed as something like “driving on ice”.  The solution was exactly what Porsche three years later would improvise, a spoiler on the lip of the trunk (boot) lid which, although only 1½ inches (38 mm) high, at some 150 mph (240 km/h) the fluid dynamics of the air-flow meant sufficient down-force was generated to tame the instability.  Of course, being NASCAR, things didn’t end there and to counter the objection the spoiler was a “non-stock” modification and thus not within the rules, Dodge cited the “safety measure” clause, noting an unstable car on a racetrack was a danger to all.  NASCAR agreed and allowed the device which upset the other competitors who cited the “equalization formula clause” and demanded they too be allowed to fit spoilers.  NASCAR agreed but set the height at maximum height at 1½ inches and specified they could be no wider than the trunk lid.  That left Dodge disgruntled because, in a quirk of the styling, the Charger had a narrower trunk lid than the rest of the field so everybody else’s spoilers worked better which seemed unfair given it was Dodge which had come up with the idea.  NASCAR ignored that objection so for 1967 the factory added to the catalogue two small “quarter panel extensions” each with its own part number (left & right); once installed, the Charger gained a full-width spoiler.

Quartervent

Quartervent (pronounced kwawr-ter-vent)

A small, pivoted, framed (or semi-framed) pane in the front or rear side-windows of a car, provided to optimize ventilation.

1930s: The construct was quarter + vent.  Dating from the late thirteenth century, the noun quarter (in its numerical sense) was from the Middle English quarter, from the Anglo-Norman quarter, from the Old French quartier, from the Latin quartarius (a Roman unit of liquid measure equivalent to about 0.14 litre).  Quartus was from the primitive Indo-European kweturtos (four) (from which the Ancient Greek gained τέταρτος (tétartos), the Sanskrit चतुर्थ (caturtha), the Proto-Balto-Slavic ketwirtas and the Proto-Germanic fedurþô).  It was cognate to quadrus (square), drawn from the sense of “four-sided”.  The Latin suffix –arius was from the earlier -ās-(i)jo- , the construct being -āso- (from the primitive Indo-European -ehso- (which may be compared with the Hittite appurtenance suffix -ašša-) + the relational adjectival suffix -yós (belonging to).  The suffix (the feminine –āria, the neuter -ārium) was a first/second-declension suffix used to form adjectives from nouns or numerals.  The nominative neuter form – ārium (when appended to nouns), formed derivative nouns denoting a “place where stuff was kept”.  The Middle English verb quarteren, was derivative of the noun.  Dating from the mid fourteenth century, vent was from the Middle English verb venten (to furnish (a vessel) with a vent), a shortened form of the Old French esventer (the construct being es- + -venter), a verbal derivative of vent, from the Latin ventus (wind), in later use derivative of the English noun.  The English noun was derived partly from the French vent, partly by a shortening of French évent (from the Old French esvent, a derivative of esventer) and partly from the English verb.  The hyphenated form quarter-vent is also used and may be preferable.  Quarter-vent is a noun; the noun plural is quarter-vents.  In use, the action of using the function provided by a quarter-vent obviously can be described with terms like quarter-venting or quarter-vented but no derived forms are recognized as standard.

1959 Cadillac Eldorado Biarritz.

Like almost all US passenger cars, the post-war Cadillacs all had quarter-vents (“vent windows” or “ventiplanes” to the Americans) and on the most expensive in the range they were controlled by an electric motor, a feature optional on the lesser models.  This was a time when the company's slogan “Standard of the World” really could be taken seriously.  In 1969, with General Motors (GM) phasing in flow-through ventilation, Cadillac deleted the quarter-vents, meaning purchasers no longer had to decide whether to pay the additional cost to have them electrically-activated (a US$71.60 option on the 1968 Calais and De Ville).  GM's early implementation of flow-through ventilation was patchy so the change was probably premature but by 1969 the system was perfected and as good as their air-conditioning (A-C), famous since the 1950s for its icy blast.    

The now close to extinct quarter-vents were small, pivoted, framed (or semi-framed) panes of glass installed in the front or rear side windows of a car or truck; their purpose was to provide occupants with a source of ventilation, using the air-flow of the vehicle while in motion.  The system had all the attributes of other admirable technologies (such as the pencil) in that it was cheap to produce, simple to use, reliable and effective in its intended purpose.  Although not a complex concept, GM in 1932 couldn’t resist giving the things an impressively long name, calling them “No Draft Individually Controlled Ventilation” (NDICV being one of history’s less mnemonic initializations).  GM’s marketing types must have prevailed because eventually the snappier “ventiplanes” was adopted, the same process of rationality which overtook Chrysler in 1969 when the public decided “shaker” was a punchier name for their rather sexy scoop which, attached directly to the induction system and, protruding through a carefully shape lacuna in the hood (bonnet), shook with the engine, delighting the males aged 17-39 to whom it was intended to appeal.  “Shaker” supplanted Chrysler’s original “Incredible Quivering Exposed Cold Air Grabber” (IQECAG another dud); sometimes less is more.  Adolf Hitler (1889-1945; Führer (leader) and German head of government 1933-1945 & head of state 1934-1945) suggested a good title for his book might be Viereinhalb Jahre [des Kampfes] gegen Lüge, Dummheit und Feigheit (Four and a Half Years of Struggle against Lies, Stupidity and Cowardice) but his publisher thought that a bit ponderous and preferred the more succinct Mein Kampf: Eine Abrechnung (My Struggle: A Reckoning) and for publication even that was clipped to Mein Kampf.  Unfortunately, the revised title was the best thing about it, the style and contents truly ghastly and it's long and repetitious, the ideas within able easily to be reduced to a few dozen pages (some suggest fewer but the historical examples cited for context do require some space).

The baroque meets mid-century modernism: 1954 Hudson Italia by Carrozzeria Touring.  

Given how well the things worked, there’s long been some regret at their demise, a process which began in the 1960s with the development of “through-flow ventilation”, the earliest implementation of which seems to have appeared in the Hudson Italia (1954-1955), an exclusive, two-door coupé co-developed by Hudson in Detroit and the Milan-based Italian coachbuilder Carrozzeria Touring.  Although some of the styling gimmicks perhaps haven’t aged well, the package was more restrained than some extravagances of the era and fundamentally, the lines were well-balanced and elegant.  Unfortunately the mechanical underpinnings were uninspiring and the trans-Atlantic production process (even though Italian unit-labor costs were lower than in the US, Touring’s methods were labor-intensive) involved two-way shipping (the platforms sent to Milan for bodies and then returned to the US) so the Italia was uncompetitively expensive: at a time when the bigger and more capable Cadillac Coupe de Ville listed at US$3,995, the Italia was offered for US$4,800 and while it certainly had exclusivity, it was a time when there was still a magic attached to the Cadillac name and of the planned run of 50, only 26 Italias were produced (including the prototype).  Of those, 21 are known still to exist and they’re a fixture at concours d’élégance (a sort of car show for the rich, the term an un-adapted borrowing from the French (literally “competition of elegance”) and the auction circuit where they’re exchanged between collectors for several hundred-thousand dollars per sale.  Although a commercial failure (and the Hudson name would soon disappear), the Italia does enjoy the footnote of being the first production car equipped with what came to be understood as “flow-through ventilation”, provided with a cowl air intake and extraction grooves at the top of the rear windows, the company claiming the air inside an Italia changed completely every ten minutes.  For the quarter-vent, flow-through ventilation was a death-knell although some lingered on until the effective standardization of A-C proved the final nail in the coffin.

1965 Ford Cortina GT with eyeball vents and quarter-vents.

The car which really legitimized flow-through ventilation was the first generation (1962-1966) of the Ford Cortina, produced over four generations (some claim it was five) by Ford’s UK subsidiary between 1962-1982).  When the revised model displayed at the Earls Court Motor Show in October 1964, something much emphasized was the new “Aeroflow”, Ford’s name for through-flow ventilation, the system implemented with “eyeball” vents on the dashboard and extractor vents on the rear pillars.  Eyeball vents probably are the best way to do through-flow ventilation but the accountants came to work out they were more expensive to install than the alternatives so less satisfactory devices came to be used.  Other manufacturers soon phased-in similar systems, many coining their own marketing trademarks including “Silent-Flow-Ventilation”, “Astro-Ventilation” and the inevitable “Flow-thru ventilation”.  For the Cortina, Ford took a “belt & braces” approach to ventilation, retaining the quarter-vents even after the “eyeballs” were added, apparently because (1) the costs of re-tooling to using a single pane for the window was actually higher than continuing to use the quarter-vents, (2) it wasn’t clear if there would be general public acceptance of their deletion and (3) smoking rates were still high and drivers were known to like being able to flick the ash out via the quarter-vent (and, more regrettably, the butts too).  Before long, the designers found a way economically to replace the quarter-vents with “quarter-panes” or “quarter-lights” (a fixed piece of glass with no opening mechanism) so early Cortinas were built with both although in markets where temperatures tended to be higher (notable South Africa and Australia), the hinged quarter-vents remained standard equipment.  When the Mark III Cortina (TC, 1970-1976) was released, the separate panes in any form were deleted and the side glass was a single pane.

Fluid dynamics in action: GM's Astro-Ventilation.

So logically a “quarter-vent” would describe a device with a hinge so it could be opened to provide ventilation while a “quarter-pane”, “quarter-light” or “quarter-glass” would be something in the same shape but unhinged and thus fixed.  It didn’t work out that way and the terms tended to be used interchangeably (though presumably “quarter-vent” was most applied to those with the functionality.  However, the mere existence of the fixed panes does raise the question of why they exist at all.  In the case or rear doors, they were sometimes a necessity because the shape of the door was dictated by the intrusion of the wheel arch and adding a quarter-pane was the only way to ensure the window could completely be wound down.  With the front doors, the economics were sometimes compelling, especially in cases when the opening vents were optional but there were also instances where the door’s internal mechanisms (the door opening & window-winding hardware) were so bulky the only way to make stuff was to reduce the size of the window.  In some cases, manufacturers "solved" the problem by making rear side glass fixed which lowered their costs but it was never popular with customers.

1976 Volkswagen Passat B1 (1973-1980 (1988 in Brazil)) without quarter-vents, the front & rear quarter-panes fixed.

The proliferation of terms could have come in handy if the industry had decided to standardize and the first generation Volkswagen Passat (1973-1980) was illustrative of how they might been used.  The early Passats were then unusual in that the four-door versions had five separate pieces of side glass and, reading from left-to-right, they could have been classified thus: (1) a front quarter-pane, (2) a front side-window, (3) a rear side-window, (4) a rear quarter-pane and (5) a quarter-window.  The Passat was one of those vehicles which used the quarter-panes as an engineering necessity to permit the rear side-window fully to be lowered.  However the industry didn’t standardize and in the pre-television (and certainly pre-internet) age when language tended to evolve with greater regional variation, not even quarter-glass, quarter-vent, quarter-window & quarter-pane were enough and the things were known variously also as a “fly window”, “valence window”, “triangle window” and (possibly annoying architects) “auto-transom”, the hyphen used and not.

PA Vauxhall Velox (1957-1962): 1959 (left) and 1960 (right).  The one-piece rear window was introduced as a running-change in late 1959.

Before flow-through ventilation systems and long before A-C became ubiquitous, quarter-vents were the industry standard for providing airflow to car interiors and it was common for them to be fitted on both front and rear-doors and frequently, the rear units were fixed quarter-panes (the lowering of the side window thing).  A special type of fixed quarter-pane were those used with rear windows, originally an economic imperative because initially it was too expensive to fabricate one piece glass to suit the “wrap-around styles becoming popular.  Improved manufacturing techniques let the US industry by the early 1950s overcome the limitations but elsewhere, the multi-piece fittings would continue to be used for more than a decade.

1957 Mercury Turnpike Cruiser (left), details of the apparatuses above the windscreen (centre) and the Breezeaway rear window lowered (right)

The 1957 Mercury Turnpike Cruiser was notable for (1) the truly memorable model name, (2) introducing the “Breezeway" rear window which could be lowered and (3) having a truly bizarre arrangement of “features” above the windscreen.  Unfortunately, the pair of “radio aerials” protruding from the pods at the top of the Mercury’s A-pillars were a mere affectation, a “jet-age” motif decorating what were actually air-intakes.

Brochure for 1957 Mercury Turnpike Cruiser promoting, inter-alia, the Breezeway retractable rear window.

A three-piece construction was however adopted as part of the engineering for the “Breezeway”, a retractable rear window introduced in 1957 on the Mercury Turnpike Cruiser.  It was at the time novel and generated a lot of publicity but the concept would have been familiar to those driving many roadsters and other convertibles which had “zip-out” rear Perspex screens, allowing soft-top to remain erected while the rear was open.  Combined with the car’s quarter-vents, what this did was create the same fluid dynamics as flow-through ventilation.  The way Mercury made the retractable glass work was to section the window in a centre flat section (some 80% of the total width), flanked by a pair of fixed quarter-panes.  After the run in 1957-1959, it was resurrected for use on certain Mercury Montclairs, Montereys and Park Lanes.

1958 (Lincoln) Continental Mark III Convertible (with Breezeway window).  The platform was unitary (ie no traditional chassis) which with modern techniques easily was achievable on the sedans and coupes but the convertible required so much additional strengthening (often achieved by welding-in angle iron) that a Mark III Convertible, fueled and with four occupants, weighed in excess of 6000 lb (2720 kg). 

Ford must have been much taken with the feature because it appeared also on the gargantuan “Mark” versions of the (Lincoln) Continentals 1958, 1959 & 1960, dubbed respectively Mark III, IV, & V, designations Ford shamelessly would begin to recycle in 1969 because the corporation wanted the new Mark III to be associated with the old, classic Continental Mark II (1956-1957) rather than the succeeding bloated trio.  The “Breezeway” Lincolns also featured a reverse-slanted rear window, something which would spread not only to the Mercurys of the 1960s but also the English Ford Anglia (105E, 1959-1968) and Consul Classic (1961-1963) although only the US cars ever had the retractable glass.  The severe roofline was used even on the convertible Continentals, made possible by them sharing the rear window mechanism used on the sedan & couple, modified only to the extent of being retractable into a rear compartment.

1974 Lincoln Continental Town Car with mini vents.

In the 1970s Lincoln introduced the novelty of “mini-vents” which raised and lowered separately from the main side-glass.  Smoking was at the time socially acceptable (in some circles it must have appeared obligatory) and there was a lot of it about so engineers devoting time to finding a better way for those wanting to “flick ash out the window” while running the A-C wasn’t surprising.  Those visualizing a “flick” in process might be surprised such a thing existed because if in a modern vehicle, its shape honed in wind-tunnels and computer simulations, what would likely happen would be “blowback”.  That’s because the shape is aerodynamically efficient (with a “buffer zone” very close to the surface) and disrupting that by lowering a window shifts the inside pressure from positive to negative, ask thus being “sucked-in”.  However, on something like a 1974 Lincoln Continental (which conceptually can be imagined as one brick sitting atop two), the buffer zone can (depending on speed) extend as as much as 3 feet (close to a metre) from the body.  The meant ash was flicked into the “buffer zone” and it didn’t end up back in the cabin.  The vents didn’t last (another casualty of the quest for lower drag) but as late as 1985 they appeared as a US$72 extra and were known in the industry as the “smoker's option”.

1967 Chevrolet Camaro 327 Convertible with vent windows (left), 1969 Chevrolet Camaro ZL1 without vent windows (centre) and Lindsay Lohan (b 1986) & Jamie Lee Curtis (b 1958) in 1969 Chevrolet Camaro Convertible during filming of the remake of Freaky Friday (2003), Los Angeles, August 2024.  Freakier Friday is slated for release in August, 2025).

Through Chevrolet's COPO (Central Office Production Order) system, 69 1969 Camaros were built with the ZL1, an all-aluminum version of the 427 cubic inch (7.0 litre) big-block V8.  The COPO had been established as an efficient way to coordinate the production of fleet orders (law enforcement agencies, utility companies etc) for runs of vehicles in a certain specification but the drag racing community and others worked out it could be used also as “back-door” way to order small runs of cars with otherwise unavailable high-performance engines.  The Freakier Friday Camaro (badged as a 396 SS but several were used during filming including at least one with a roll-over bar for the stunt work) lacks the vent windows which were deleted from the range after 1967 when “Astro-Ventilation” (GM’s name for flow-through ventilation) was added.  In North American use, the devices typically are referred to as “vent windows” while a “quarter light” is a small lamp mounted (in pairs) in the lower section of the front bodywork and a “quarter-vent” is some sort of (real or fake) vent installed somewhere on the quarter panels.  As flow-through ventilation became standardized and A-C installation rates rose, Detroit abandoned the quarter-vent which pleased industry because it eliminated both parts and labor, lowering the cost of production (the savings absorbed as profits rather than being passed to the customers).  On the small, cheap Ford Pinto (1971-1980), removing the feature saved a reported US$2.16 per unit but, being small and cheap, A-C rarely was ordered by Pinto buyers which was probably a good thing because, laboring under the 1970s burdens of emission controls, the weight of  impact-resistant bumper bars and often an automatic transmission a Pinto was lethargic enough with out adding power-sapping A-C compressor and plumbing.  Responding (after some years of high inflation) to dealer feedback about enquires from Pinto customers indicating a interest in the return of vents, Fords cost-accountants calculated the unit cost of the restoration would be some US$17.  

Ford Australia’s early advertising copy for the XA Falcon range included publicity shots both with and without the optional quarter-vents (left) although all sedans & station wagons had the non-opening, rear quarter-panes, fitted so the side window completely could be lowered.  One quirk of the campaign was the first shot released (right) of the “hero model” of the range (the Falcon GT) had the driver’s side quarter-vent airbrushed out (how “Photoshop jobs” used to be done), presumably because it was thought to clutter a well-composed picture.  Unfortunately, the artist neglected to defenestrate the one on the passenger’s side.

Released in Australia in March 1972, Ford’s XA Falcon was the first in the lineage to include through-flow ventilation, the previously standard quarter-vent windows moved to the option list (as RPO (Regular Production Option) 86).  Because Australia often is a hot place and many Falcons were bought by rural customers, Ford expected a high take-up rate of RPO 86 (it was a time when A-C was expensive and rarely ordered) so the vent window hardware was stockpiled in anticipation.  However, the option didn’t prove popular but with a warehouse full of the parts, they remained available on the subsequent XB (1973-1976) and XC (1976-1979) although the take-up rate never rose, less the 1% of each range so equipped and when the XD (1979-1983) was introduced, there was no such option and this continued on all subsequent Falcons until Ford ceased production in Australia in 2016, by which time A-C was standard equipment.

Great moments in tabloid journalism: Sydney's Sun-Herald, Sunday 25 June, 1972.  The Sun-Herald was then part of the Fairfax group, proving Rupert Murdoch (b 1931) can't be blamed for everything.

The infrequency with which RPO 86 was ordered has been little noted by history but on one car with the option the fixtures did become a element which enabled a owner to claim the coveted “one-of-one” status.  In August 1973, near the end of the XA’s run, with no fanfare, Ford built about 250 Falcons with RPO 83, a bundle which included many of the parts intended for use on the stillborn GTHO Phase IV, cancelled (after four had been built) in 1972 after a newspaper generated one of their moral panics, this time about the “160 mph super cars” it was claimed the local manufacturers were about to unleash and sell to males ages 17-25.  Actually, none of them were quite that fast but not often has the tabloid press been too troubled by facts and the fuss spooked the politicians (it's seldom difficult to render a "minister horrified").  Under pressure, Holden cancelled the LJ Torana V8, Ford the GTHO Phase IV and Chrysler reconfigured it's E55 Charger 340 as a luxury coupé, available only with an automatic transmission and no high-performance modifications.

The “quarter-vent XA RPO 83 GT”: 1973 Ford Falcon XA GT sedan (Body Identification: 54H; Model Code: 18238) in Calypso Green (code J) with Onyx Black (code B) accents over Black Vinyl (Code B) with 351 4V V8 (Code T) and four-speed manual transmission (Code L).  It’s the only one produced with both RPO 83 (a (variably fitted) bundle of parts left-over from the aborted GTHO Phase IV project) and RPO 86 (front quarter-vent windows).  In the collector market they're referred to usually as “the RPO83 cars”.

So in 1973 Ford's warehouse still contained all the parts which were to be fitted to the GTHO Phase IV so they’d be homologated for competition and although the rules for racing had been changed to ensure there was no longer any need to produce small batches of “160 mph (257 km/h) super cars”, Ford still wanted to be able to use the heavy-duty bits and pieces in competition so quietly conjured up RPO 83 and fitted the bundle on the assembly line, most of the cars not earmarked for allocation to racing teams sold as “standard” Falcon GTs.  Actually, it’s more correct to say “bundles” because while in aggregate the number of the parts installed was sufficient to fulfil the demands of homologation, not all the RPO 83 GTs received all parts so what a buyer got really was “luck of the draw”; with nobody being charged extra for RPO 83, Ford didn’t pay too much attention to the details of the installations and many who purchased one had no idea the parts had been included, the manual choke's knob the only visually obvious clue.  Ford made no attempt to publicize the existence of RPO 83, lest the tabloids run another headline.  It’s certain 250 RPO 83 cars were built (130 four-door sedans & 120 two-door Hardtops) but some sources say the breakdown was 131 / 121 while others claim an addition nine sedans were completed.  Being a genuine RPO 83 car, the Calypso Green GT attracts a premium and while being only RPO 83 with quarter-vent windows is not of any great significance, it does permit the prized “one-of-one” claim and not even any of the four GTHO Phase IVs built (three of which survive) had them.  In the collector market, the “one-of-one” status can be worth a lot of money (such as a one-off convertible in a run of coupés) but a Falcon’s quarter-vents are only a curiosity.

The Bathurst 1000 winning RPO83 Falcon GTs, 1973 (left) & 1974 (right).

All else being equal, what makes one RPO83 more desirable than another is if it was factory-fitted with all the option's notional inventory and most coveted are the ones with four-wheel disk brakes.  Because the project was focused on the annual endurance event at Bathurst's high-speed Mount Panorama circuit, the disks were as significant as an additional 50 horsepower and a few weeks before the RPO 83 run they'd already been fitted to the first batch of Landaus, which were Falcon Hardtops gorped-up (what bling used to be called) with hidden headlights, lashings of leather, faux woodgrain and a padded vinyl roof, all markers of distinction in the 1970s and, unusually, there was also a 24 hour analogue clock.  Essentially a short wheelbase, two-door LTD (which structurally was a Falcon with the wheelbase stretched 10 inches (250 mm) to 121 (3075 mm)), the Landau was not intended for racetracks but because it shared a body shell and much of the running gear with the Falcon GT Hardtops, Ford claimed Landau production counted towards homologation of the rear disks.  Fearing that might be at least a moot point, a batch were installed also on some of the RPO83 cars and duly the configuration appeared at Bathurst for the 1973 event, their presence of even greater significance because that was the year the country switched from using imperial measures to metric, prompting the race organizers to lengthen the race from 500 miles (804 km) to 625 (1000), the Bathurst 500 thus becoming the Bathurst 1000.  RPO83 Falcon GTs won the 1973 & 1974 Bathurst 1000s.

The “quarter-vent XB GT”: 1973 Ford Falcon XB GT sedan (Body Identification: 54H; Model Code: 18338) in Polar White (Code 3) with Onyx Black (code B) accents over Parchment Vinyl (Code P) with 351C 4V V8 (Code T) and four-speed manual transmission (Code L).  The only one produced with RPO 86 (front quarter-vent windows).

So with a large stock sitting in the warehouse, despite the dismally low take-up rate, the quarter-vents remained available when the XB Falcon (1973-1976) range was released and of the 1952 XB GT sedans sold (there were also 949 two-door Hardtops) a single buyer ticked the RPO 86 box.  Again, although granting the coveted “one-of-one” status, it’s not something of great significance although the car to which the pair of vents was fitted is one of the more desirable XB GTs because it was one of the 139 XB GTs built with the combination of the “4V Big Port” 351 V8 and four-speed Top Loader manual transmission.  The first 211 XB GTs received the fully-imported 351 Clevelands, “using up” what was in stock, subsequent models switching to the locally made variant.

US Built 351C-4V in 1973 XB Falcon GT.

Ford Australia had been importing from the US the high-performance 351C-4V (4 venturi (ie two-barrel carburetor)) V8 for use in the GT but when advised US production of that configuration was ending, the decision was taken to produce a local “high-performance” version of the 351 using the 351C 2V “small port” cylinder heads with “open” combustion chambers and a four-barrel carburetor; Ford Australia only ever manufactured the “small port” heads.  That means the Australian nomenclature “351C-4V” (small ports & four barrel carburetor) differs in meaning from that used in the US where it translated to “big ports & four barrel carburetor”.  It sounded a retrogressive step and while there was some sacrifice in top-end power, the antipodean combo turned out to be ideal for street use because the fluid dynamics of the flow rate through the smaller ports made for better low and mid-range torque (most useful for what most drivers do most of the time) whereas the big-port heads really were optimized for full-throttle operation, something often done on race tracks but rarely on public roads… even in the Australia of the early 1970s.  Still, some did miss the responsiveness of the high-compression US-built engine, even if the difference was really apparent only above 80 mph (130 km/h).

The other ceremony which happened in Australia on 11 November, 1975: Ford Australia's photo shoot, Melbourne, Victoria.

Although only 2,901 XB GTs were produced, as the “halo” model it was an important image-maker and the XB range proved successful with almost 212,000 sold over its 34 month life (over 18 months in a generally more buoyant economy XA production had reached over 129,000).  Stylistically, the XB was an improvement over the poorly detailed XA and much was made (among Ford's claimed 2,056 changes from the XA) of the headlight’s high-beam activation shifting from a foot-operated button to a steering column stalk which, thirty-odd years on from the achievement of nuclear fission, doesn’t sound like much but motoring journalists had for years been advocating for “a headlight flasher”, having been impressed by the “safety feature” when being “flashed” on the German Autobahns by something about to pass at high speed.  More welcome still was the GT’s four-wheel disk brakes, acknowledged as good as any then in volume production.  The success of the XB coincided with Ford Australia’s two millionth vehicle leaving the assembly line so on Tuesday 11 November, 1975, Ford’s public relations office invited journalists and camera crews to a ceremony to mark the occasion, laying on the usual catering (including free cigarettes!) to ensure a good attendance.

Ford Australia pre-release publicity shot for the XB range release (embargoed until 15 September 1973).

1973 Ford Falcon XB GT Hardtop (Body Identification: 65H; Model Code: 18318) in Yellow Blaze (Code M) with Onyx Black (code B) accents over Black Vinyl (Code B) with 351C 4V V8 (Code T) and three-speed T-Bar automatic transmission (Code B).  Because the various side windows used by the Hardtop, Ute and Panel Van derivatives were different to fit the door and roof shapes, the quarter-vents were never offered on those and RPO 86 on the Hardtops was the dreaded vinyl roof in tan.  The sunroof (RPO 10) was a rarely (168 Falcons and 244 Fairmonts) specified option.

Unfortunately, the pictures of the dutifully polished XB Fairmont (a Falcon with some gorp) sedan didn’t generate the publicity expected because the next editions of the daily newspapers (there were then a lot of those and they sold in big numbers) had a more sensational story to cover: On that Tuesday Sir John Kerr (1914–1991; governor-general of Australia 1974-1977) had dismissed from office Gough Whitlam (1916–2014; prime minister of Australia 1972-1975) and his troubled administration.  It was the first time the Crown had sacked a prime-minister since William IV (1765–1837; King of the UK 1830-1837) in 1834 dismissed Lord Melbourne (1779–1848; prime minister of the UK 1834 & 1835-1841) and although in 1932 Sir Philip Game (1876–1961; governor of NSW 1930-1935) had sundered the commission of Jack Lang (1876–1975; premier of New South Wales 1925-1927 & 1930-1932), most Australians who pondered such things believed the days of meddling viceroys were done.  Sir John however proved the royal prerogative still existed (although paradoxically perhaps now only in the hands of a monarch’s representative rather than their own) and the XB Falcon's footnote in the history of Australian manufacturing passed almost unnoticed.