. Automotive industries . OBILE 1437 1 h8ol50y / 50*^ 1T8ZS 101W 1017 1019 Chart A—Curve A shows the old cars inservice each year. The increase yearlyis quite marked from 1916 to drops off in the following B shows the total number ofcars withdrawn from service due toold age and storage causes. It is acumulative curve. From 1919 to 1920shows a marked increase in numberover any preceding year. value of the various sets of differs from the full logarithmicpaper in that only the vertical co-ordinates are plotted logarithmi-cally, while the horizontal coordi-nates ar


. Automotive industries . OBILE 1437 1 h8ol50y / 50*^ 1T8ZS 101W 1017 1019 Chart A—Curve A shows the old cars inservice each year. The increase yearlyis quite marked from 1916 to drops off in the following B shows the total number ofcars withdrawn from service due toold age and storage causes. It is acumulative curve. From 1919 to 1920shows a marked increase in numberover any preceding year. value of the various sets of differs from the full logarithmicpaper in that only the vertical co-ordinates are plotted logarithmi-cally, while the horizontal coordi-nates are arithmetical. 11503215 j | 7 * 73JB050J ~/:-iiv- i 7 / §/ «a£,M „ 3 sAtf 7 ■/ 7 7 • . / V / 2070500, I .^e-^N £>^ l 1033000 93344. K 0 ^701740 si- j£ ■■ ^il—(s!8 00 IB1- 3^fe¥- b7765: ., \f8fc ~ 355148 41 -r i>i:. 1917. Chart 5 shows the cumulative net carproduction since automobiles were firstmanufactured and the B registrationseach year from 1912. The differencebetween these curves each year showsthe cars withdrawn from service thatyear. The net yearly production curveC shows how many of the registra-tions are new car owners. The differ-ence between the registration B andyearly production curve C gives theold cars running. Chart 6—This chart is plotted on , the slope of the lines showing thepercentaoe increase of each item. Curve Dshows a pretty uniform per cent increaseexcept from 16 to 18. when it increased muchmore than any other period. At the samet,m. the per cent of cars produced fell off aswell as the percentage of registrationsThese two decreases affected the use of oldcars by causing the owners to use them ayear longer than they ordinarily would. 1919shows the per cent of old cars to have de-creased and the per cent of production andregistration to have risen again nearly to


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Keywords: ., bookcentury1800, bookdecade1890, booksubjectaeronautics, bookyear