Nitrogen Balance, with comparison of income and output, amount and character of the daily food 103 Beers: Daily Record of Nitrogen Excretion, etc. 111 First Nitrogen Balance, with comparison of income and output, amount and character of the daily food 114 Second Nitrogen Balance, with composition of daily food, etc. 121 Summary of Results; True Proteid Requirements 127 II. EXPERIMENTS WITH VOLUNTEERS FROM THE HOSPITAL CORPS OF THE UNITED STATES ARMY. Description of the Men 134 Daily Routine of Work 135 Daily Record of Nitrogen Excretion, etc., for each of the thirteen men under experiment 139 Average Daily Output of Nitrogen 199 Nitrogen Metabolized per kilo of Body-Weight 201 Changes in Body-Weight during the Experiment 202 First Nitrogen Balance, with comparison of income and output, amount and character of the daily food 203 Second Nitrogen Balance, with composition of daily food, etc. 223 Third Nitrogen Balance, with composition of daily food, etc. 242 Summary regarding Nitrogen Requirement 254 Physical Training of the Men—Report by Dr. Anderson of the Yale Gymnasium 255 Body Measurements 261 Strength or Dynamometer Tests 262 Comparison of the Total Strength of the Men at the beginning and end of the Experiment 274 Reaction Time Experiments—Report by Dr. Judd of the Yale Psychological Laboratory 276 Character and Composition of the Blood 283 General Conclusions 285 Daily Dietary of the Soldier Detail 288 III. EXPERIMENTS WITH UNIVERSITY STUDENTS, TRAINED IN ATHLETICS. Consumption of Proteid Food by Athletes 327 Description of the Men 329 Daily Record of Nitrogen Excretion, etc., for each of the eight men under Experiment 332 Average Daily Excretion of Metabolized Nitrogen 364 Metabolized Nitrogen per kilo of Body-Weight 365 Daily Diet Prescribed 366