p. 26

24

Rules-Data &c

To ascertain the power applied multiply the weight of water expanded by the height of the head above the bottom of the wheel. Jour. Fr. Inst 6 p. 147

To show the effect, multiply the weight raised by the distance through which it is raised. Ibid.

A cubic foot of water weighs 62 1/2 pounds.

Friction must be allowed for.

If a wheel with 14 ft height of head with 100 cubic feet of water pr minute has a power of

[Table of Data]

This table will show the relative value of water under different heads.

The effect is 75 to 80 pr ct. of the above.