Hunter, _Laboratory Problems in Civic Biology_. American
Book Company.
Davison, _Human Body and Health_. American Book Company.
Gulick, _Hygiene Series, Emergencies, Good Health_. Ginn
and Company.
Hough and Sedgwick, _The Human Mechanism_. Ginn and Company.
Macy, _General Physiology_. American Book Company.
Ritchie, _Human Physiology_. World Book Company.