vi 
CONTENTS 
Feeding Experiments with Mixtures of Foodstuffs in Unusual Proportions 
By Thomas B. Osborne and Lafayette B. Mendel 157 
Some Physical Characteristics of the Bar By John P. Minton 221 
A Method for Obtaining Constants for Formulas of Organic Growth 
By H. S. Reed 311 
A Physical Basis for Epidemiology 
By Simon Flexner and Harold L. Amoss 319 
ANTHROPOLOGY 
Chronology of The San Juan Area By E. H. Morris 18 
Peabody Museum Arizona Exploration, 1920 
By A. V. Kidder and S. J. Guernsey 69 
