Popular science monthly . esting tenden-cies of the times in the automobile-manufacturing business is the growingpopularity of the wire wheel. An exami-nation of the statistics of wheel produc-tion in this country reveals the fact that adistinct wire wheel boom is under wayand is rapidly gaining momentum. Atthe end of 1915 it was estimated thatthere were not more than ten thousandcars equipped with wire wheels. The1916 season, though not yet finished, hasprobably added fifty or even sixt\- thou-sand cars to this class, a gain of fivehundred per cent. With that spectacu-ar increase in mind it i
Popular science monthly . esting tenden-cies of the times in the automobile-manufacturing business is the growingpopularity of the wire wheel. An exami-nation of the statistics of wheel produc-tion in this country reveals the fact that adistinct wire wheel boom is under wayand is rapidly gaining momentum. Atthe end of 1915 it was estimated thatthere were not more than ten thousandcars equipped with wire wheels. The1916 season, though not yet finished, hasprobably added fifty or even sixt\- thou-sand cars to this class, a gain of fivehundred per cent. With that spectacu-ar increase in mind it is notdifficult to credit well-inform-ed automobile men whopredict that 1917 will seetwo hundred thousandnew cars put on wirewheels. These wheelsare popular on ac-count of their hand-some appearance;and they have re-ceived an impetusfrom the scarcity ofhickory of the bestquality, and fromthe patent litigationwhich has vexed themanufacturersof thedemountable rim. Producing^^the Coldest Cold Think of 400 de-grees below zero!. Burning a piece of cold-rolled steel in liquid an. The liquefied oxygencombines so rapidly with the metal that a furious heat is produced At right: By using a vacuumpump the rate of evaporation can beincreased enough to freeze the aircontacting the outside of the tube AMONCi the more start-AA Hng discoveries of thejjast decade is the pro-duction of temperatures reach-ing as far as 400° F. below-zero. It is the attainment ofthese low temperatures thathas brought the chemist andplusicist into a new world;for when matter is subjectedto such degrees of cold, thereis a complete alteralinii ofboth its chemical and jilusicaljjropcrtics. Each substance on ourearth has individual properties, Ixitli (luin-ical and physical, whicli it can retain onl\at a specific temperature—a temperature 916 Think of gases that have been squeezedand cooled until they look like water! which nature set for we alter this tempera-ture by artificial means thesubstance will gradualh
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
