Chapter III: Functions of Nature

These books will treat of the relation of facts to causes and
effects--of heredity and the relations of organism to
environment. 8vo. 6-5/8x8-7/8 in.

Already publisht:

=THE BIRD: ITS FORM AND FUNCTION=, by C. W. BEEBE, Curator of
Birds in the New York Zoological Park. 8vo, 496 pp. $3.50 net;
by mail, $3.80.

Arranged for:

=THE INSECT: ITS FORM AND FUNCTION=, by VERNON L. KELLOGG,
Professor in the Leland Stanford Junior University.

=THE FISH: ITS FORM AND FUNCTION=, by H. M. SMITH, of the U. S.
Bureau of Fisheries.