Horse, Truck and Tractor: The Coming of Cheaper Power for City and Farm |
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30-horse-power acres agriculture animal average binder bushels capacity carrying cars Catskill Aqueduct cents per mile cheaper companies corn belt cost of operating cost per day crop depreciation disc draft driver economical efficiency eight engine expense farm tractor farmer feed feet field figures five fixed charges four freight fuel furrow gang plow garage gas tractor gasolene grain handling harness harrows harvest hauling heavy hitched horse equipment horse power horse-power inches increased interest investment kerosene labor land less load machine manufacturers mechanical power miles per day miles per hour month motor transportation motor truck number of horses outfit owner Pocahontas County pounds Power harvesting power truck practically problem production profit pull Purdue University repairs road saving small tractor soil speed stable steam steam tractor streets teams threshing tires tons Total cost traction traction engine trip wheat Wheel tax wheels