. Review of reviews and world's work . .Long hauls are nec-essary for the estab-lishment of the sub-stantial value of themachine. In suchwork, within limita-tions, it has no is often superioreven to the it is worth whilenoting that evenwithin the field whereboth horses and mo-tor wagons may beemployed, the latteroutclass the formerwhenever the loadsare liigh. The econ-omy of the machines,evident from the veryfirst, gradually in-creases until ateleven miles or there-. abouts there is no competing form of servicewith which it may be contrasted. If thereis considerable activ
. Review of reviews and world's work . .Long hauls are nec-essary for the estab-lishment of the sub-stantial value of themachine. In suchwork, within limita-tions, it has no is often superioreven to the it is worth whilenoting that evenwithin the field whereboth horses and mo-tor wagons may beemployed, the latteroutclass the formerwhenever the loadsare liigh. The econ-omy of the machines,evident from the veryfirst, gradually in-creases until ateleven miles or there-. abouts there is no competing form of servicewith which it may be contrasted. If thereis considerable activity of performance thebalance in favor of mechanical transport isfound to be all the greater. Edward R. Hewitt, of New York, hasfaithfully w a t c h e dthe performance oftwo, three-, fne-, andten-ton gasolineLrucks in work where-in the cost of draft-animal scrxice is ac-curately known. Inthe table shown on page he recordsthe results of theseobservations. As theligures in the tableare computed uponthe basis of one-wayhaulage, it is plainthat they do not dofull justice to thejnotor wagon, noraccurately reveal theinefficiency of thehorse. Were horsesworked hauling fullloads both ways, itwould be necessaryto depreciate greatl} TRUCK USED FOR SAFE-MOVING (A power winch replaces the former hand winches for hoisting) 444 THE AMERICAN REVIEW OF REVIEWS to them in the table. On the other hand, ized by the necessity of having the stable so were the machines employed at full capac-
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