[177]. Report U. S. Nat. Mus. for 1898, pp. 153–1270, 1900.

[178]. Bull. 34, U. S. Nat. Mus., 1889.

[179]. Bull. 47, parts I-IV, U. S. Nat. Mus., 1896–1900.

[180]. J. Loeb, The Organism as a Whole, p. 126, 1916.

[181]. The Germ-cell Cycle in Animals, 1914.

[182]. The Cell in Development and Inheritance, 1896; second edition, 1900.

[183]. Morgan, T. H. A critique of the theory of evolution, p. 32, 1916.

XIII
THE DEVELOPMENT OF BOTANY SINCE 1818

By GEORGE L. GOODALE

Our Botany, it is true, has been extensively and successfully investigated, but this field is still rich, and rewards every new research with some interesting discovery.