Richard Owen Animal Quotations

The laws of Coexistence;-the adaptation of structure to function; and to a certain extent the elucidation of natural affinities may be legitimately founded upon the examination of fully developed species;-But to obtain an insight into the laws of development,-the signification or bedeutung, of the parts of an animal body demands a patient examination of the successive stages of their development, in every group of Animals.

Analogue. A part or organ in one animal which has the same function as another part or organ in a different animal.

Homologue. The same organ in different animals under every variety of form and function.