The typical animal egg, once fertilized, develops as a unit; the secret fetus slips out of one stage of development into another, each stage geologic eons from the other, as it recapitulates animal evolution.


Flowering Earth, Chapter 4 (p. 48), G.P. Putnam's Sons. 1939

Donald Culross Peattie Quotes

The typical animal egg, once fertilized, develops as a unit; the secret fetus slips out of one stage of development into another, each stage geologic ...

The typical animal egg, once fertilized, develops as a unit; the secret fetus slips out of one stage of development into another, each stage geologic ...

The typical animal egg, once fertilized, develops as a unit; the secret fetus slips out of one stage of development into another, each stage geologic ...

The typical animal egg, once fertilized, develops as a unit; the secret fetus slips out of one stage of development into another, each stage geologic ...