Human Life as the Biologist Sees It

Human Life as the Biologist Sees It

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Human Life as the Biologist Sees It

Human Life as the Biologist Sees It

Read FREE!

Excerpt

The biologist pays much attention to origins; often too much. Two things can have a common or related origin and yet acquire differences in the course of their development which make, for all practical purposes, two very different things out of them. Quantitative differences may come to be so great that they have all the practical effect of qualitative differences. Or qualitative differences, very small, indeed, when measured by the chemist or physicist and described in the terminology of their sciences, may have very large effects in the practical relation of the substances or things exhibiting them. The sugar-loving man who eats a little of a certain substance which the chemist assures him is made up of the same numbers of atoms of the same three kinds of chemical elements of which . . .

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