The Buffalo Is A Surprisingly Stupid Animal.

The Whole History Of Life Is A Record Of Cycles.

Although Mountains May Guide Migrations, The Plains Are The Regions Where People Dwell In Greatest Numbers.

Except On Their Southern Borders The Great Northern Forests Are Not Good As A Permanent Home For Man.

The Negro, However, Has Been Tested On An Extensive Scale.

Geologists Are Rapidly Becoming Convinced That The Mammals Spread From Their Central Asian Point Of Origin Largely Because Of Great Variations In Climate.