The Buffalo Is A Surprisingly Stupid Animal.

America Forms The Longest And Straightest Bone In The Earth's Skeleton.

The Whole History Of Life Is A Record Of Cycles.

From First To Last The Civilization Of America Has Been Bound Up With Its Physical Environment.

No Part Of The World Can Be Truly Understood Without A Knowledge Of Its Garment Of Vegetation, For This Determines Not Only The Nature Of The Animal Inhabitants But Also The Occupations Of The Majority Of Human Beings.

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