Mutants and hybrids of the oenotheras.

Papers of Station for experimental evolution at Cold Spring Harbor, New York, no. 2.

Desert botanical laboratory of the Carnegie institution,

"Bibliography. By William Austin Cannon": p. 46-58.

Growth in trees and massive organs of plants : dendrographic measurements ; The growth record in trees, by Forrest Shreve.

Xerox reprint.

Hydration and growth,

"Literature cited": p. 174-176.

Botanic gardens.

"Reprinted from Appletons' Popular science monthly for December, 1896, and January, 1897."