ecessary to
use small amounts of foods rich in protein in order to secure a balanced
ration; excessive use of protein, however, is not economical, as that
which is not needed for functional purposes is converted into heat and
energy which could be supplied as well by the carbohydrates, and they
are less expensive nutrients.

[Illustration: FIG. 57.--PECUNIARY ECONOMY OF FOOD.

(From Office of Experiment Stations Bulletin.)]

TEN CENTS WILL PURCHASE: (From Farmer's Bulletin No. 142, U. S.
Dept. of Agr.)

=============================================================================
| | TOTAL | | | |
| | WEIGHT | | | |
KIND OF FOOD | PRICE | OF FOOD | | | CAR- |
MATERIAL | PER | MATE- |PROTEIN | FAT | BOHY- | ENERGY
| POUND | RIAL | | | DRATES |
------------------------+-------+---------+--------+-------+---------+-------
| Cents | Pounds | Pound | Pound | Pounds |Calories
Beef, sirloin | 25 | 0.40 | 0.06 | 0.06 | -- | 410
Do. | 20 | 0.50 | 0.08 | 0.08 | -- | 515
Do. | 15 | 0.67 | 0.10 | 0.11 | -- | 685
Beef, round | 16 | 0.63 | 0.11 | 0.08 | -- | 560
Do. | 14 | 0.71 | 0.13 | 0.09 | -- | 630
Do. | 12 | 0.83 | 0.15 | 0.10 | -- | 740
Beef, shoulder clod | 12 | 0.83 | 0.13 | 0.08 | -- | 595
Do. | 9 | 1.11 | 0.18 | 0.10 | -- | 795
Beef, stew meat | 5 | 2.00 | 0.29 | 0.23 | -- | 1530
Beef, dried, chipped | 25 | 0.40 | 0.10 | 0.03 | -- | 315
Mutton chops, loin | 16 | 0.63 | 0.08 | 0.17 | -- | 890
Mutton, leg | 20 | 0.50 | 0.07 | 0.07 | -- | 445
Do. | 16 | 0.63 | 0.09 | 0.09 | -- | 560
Roast pork, loin | 12 | 0.83 | 0.11 | 0.19 | -- | 1035
Pork, smoked ham | 22 | 0.45 | 0.06 | 0.14 | -- | 735
Do. | 18 | 0.56 | 0.08 | 0.18 | -- | 915
Pork, fat salt | 12 | 0.83 | 0.02 | 0.68 | -- | 2950