It is evident that a very large number of economic problems must arise in connection with the land supply for food: such as problems of land-ownership, taxation, irrigation, drainage, forestry, and encouragement or limitation of population.

We are just beginning to awaken to the needs in this direction.
The rivers, lakes, and ocean waters near our coasts are other great sources of food, but no statistics are available to show adequately their yield.

Few of them are in private possession and they do not appear at all in a total of "capitals," yet they are more important to the nation than a large part of the land area.

They are only beginning to be developed artificially by the propagation of oysters, clams, and fish.

The development of a proper policy in this matter is one of our economic problems.
There were in 1910 (mostly on farms) about 64,000,000 beef and dairy cattle, 60,000,000 swine, 56,000,000 sheep and goats, and there were raised in the one year nearly 500,000,000 fowls of all kinds.
Sec.9.