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In a horse mill moving at 3 feet per second, track 25 feet
diameter, he exerts with the machine the power of 4-1/2
horses.
The greatest amount a horse can pull in a horizontal line is
900 lbs.; but he can only do this momentarily, in continued
exertion, probably half of this is the limit.
He attains his growth in 5 years, will live 25, average 16
years.
A horse will live 25 days on water, without solid food, 17
days without eating or drinking, but only 5 days on solid
food, without drinking.
A cart drawn by horses over an ordinary road will travel 1.1
miles per hour of trip.
A 4-horse team will haul from 25 to 30 cubic feet of lime
stone at each load.
The time expended in loading, unloading, etc., including
delavs, averages 35 minutes per trip.
The work done by an
animal is greatest when the velocity with which he moves is
1/8 of the greatest with which he can move when not impeded,
and the force then exerted .45 of the utmost force the
animal can exert at a dead pull. |