Hunter, _Laboratory Problems in Civic Biology_. American
Book Company.
Andrews, _A Practical Course in Botany_, pages 1-21.
American Book Company.
Atkinson, _First Studies of Plant Life_, Chap. XXX. Ginn and
Company.
Bailey, _Botany_, Chaps. XX, XXX. The Macmillan Company.
Beal, _Seed Dispersal_. Ginn and Company.
Bergen and Davis, _Principles of Botany_, Chaps. XX, XXX.
Ginn and Company.
Coulter, _Plant Life and Plant Uses_. American Book Company.
Dana, _Plants and their Children_. American Book Company.
Mayne and Hatch, _High School Agriculture_. American Book
Company.
Lubbock, _Flowers, Fruits, and Leaves_. The Macmillan
Company.
Newell, _Reader in Botany_, pages 24-49. Ginn and Company.
Sharpe, _A Laboratory Manual in Biology_, pages 55-65.
American Book Company.