. Cassier's magazine . FIG. 8. PUSH-UP TEST OF HUMAN ENERGY FIG. 9. PULL-UP TEST OF STRENGTH four times as much as can man andgo twenty days without drinking,which can hardly be said of the moststrenuous prohibitionist. According to investigations madein New York,* the cost of transport-ing material in that city by means ofa two-horse delivery wagon was inone case 10 cents per ton per mile;while the cost of delivering with amotor truck was only cents perton-mile—and the motor did the sameamount of work in about two-thirdsthe time required by the horses. Ac-cording to the data of a leading
. Cassier's magazine . FIG. 8. PUSH-UP TEST OF HUMAN ENERGY FIG. 9. PULL-UP TEST OF STRENGTH four times as much as can man andgo twenty days without drinking,which can hardly be said of the moststrenuous prohibitionist. According to investigations madein New York,* the cost of transport-ing material in that city by means ofa two-horse delivery wagon was inone case 10 cents per ton per mile;while the cost of delivering with amotor truck was only cents perton-mile—and the motor did the sameamount of work in about two-thirdsthe time required by the horses. Ac-cording to the data of a leading au-tomobile manufacturer, the cost ofoperating a horse and buggy may besomething like 2x/2 cents per passen-ger-mile, while the cost of operatinga small gasoline car is only about 1%cents per passenger-mile. If horse-energy is so much more expensivethan mechanical power, what can besaid of man-power? CONCLUSION It seems, then, in view of theseconsiderations, that the exploitation * Transactions American Institute El
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