4h.

per day

1,653 gals.

per min.;

1ft.

high.

5"

" "

1,480 "

" "

" "

"

6"

" "

1,350 "

" "

" "

"

8 "

" "

1,160 "

" "

" "

"

10"

" "

1.040 "

" "

" "

"

Tractive force of a horse when working 8 hours a day on a well-made road and walking at a rate of 2 miles per hour, 150 lbs.

Tractive force of a horse when working a lift or horse-run with intervals of rest between each movement, the day's work not to exceed 6 hours, 300 lbs.

Tractive force of a horse when working in a circle of 30 feet diameter in working a mill for 8 hours per day at a pace of 2 miles per hour, 100 lbs.

A horse can exert a force horizontally at a dead pull, 400 lbs.

A horse can carry on his back a distance of 20 miles per day on a well-made road, without overexertion, from 250 to 300 lbs.

The horse-power adopted as a unit in estimating the force of a steam-engine = 33,000 lbs. raised 1 foot high in 1 minute, an amount of force which few horses could perform for any length of time.