The Negro, However, Has Been Tested On

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

Curiously Enough Man's Body And His Mind Appear To Differ In Their Climatic Adaptations.

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.

As A Matter Of Fact, An Ordinary Desert Supports A Much Greater Variety Of Plants Than Does Either A Forest Or A Prairie.

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