instance, the foot-ton, which represents the force required to raise one ton one foot. One calorie is equal to very nearly 1.53 foot-tons.

The following general estimate has been made for the average amount of potential energy in 1 pound of each of the classes of nutrients:

In other words, when we compare the nutrients in respect to their fuel values, their capacities for yielding heat and mechanical power,

Diagram Of Cuts Of Beef.

Diagram Of Cuts Of Veal.

a pound of protein of lean meat or albumen of egg is just about equivalent to a pound of sugar or starch, and a little over two pounds of either would

Diagram Of Cuts Of Pork.

be required to equal a pound of the fat of meat or butter or the body fat.

Within recent years analyses of a large number of samples of foods have been made in this country. In the tables on pages 364-367 the results of a number of these analyses are given:

Copyright, 1901, by Munn & Co.

Comparison Of Farm Animals In The United States.