Food Materials

Water Per Cent

Protein Per Cent

Fat Per Cent

Carbohydrate Per Cent

Ash Per Cent

Milk.....

87.0

3.3

4.0

5.0

0.7

Beans, dried . .

12.6

22.5

1.8

59.6

3.5

Notice that the substances in the beans are the same in general nature as those in the milk, although the amounts are different. The water that the young plant needs is, of course, supplied from the earth. There is another difference to note although this is not shown in the table; in the beans the carbohydrate is of two kinds, sugar and starch.