The Negro, However, Has Been

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.

History In Its Broadest Aspect Is A Record Of Man's Migrations From One Environment To Another.

Man Could Not Stay There Forever. He Was Bound To Spread To New Regions, Partly Because Of His Innate Migratory Tendency And Partly Because Of Nature's Stern Urgency.

In America The Most Widespread Type Of Forest Is The Evergreen Coniferous Woodland Of The North.

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