CONTENTS 



PAGE. 



Introduction 3 



Search for subnormal metabolism 5 



Study of factors tending to lower metabolism 11 



Previous investigations on metabolism with undernutrition 13 



Summary of previous literature 33 



Purpose and plan of present research 36 



History of inception of research 37 



General plan of research 38 



Reduction of body-weight of subjects 39 



Selection of subjects 40 



Essentials for selection 41 



Final selection of men 42 



College status of men in Squad A 44 



Evidence of dietetic control 45 



Personal histories 47 



Squad A 47 



Squad B 53 



Program of research 55 



Week-end program 59 



Chronological history of low-diet research 60 



Methods and apparatus used in the research 66 



Miscellaneous methods and minor apparatus 67 



Food control 67 



Kinds of food served 67 



Methods of weighing and apportioning 68 



Collection and separation of feces 70 



Collection of urine 71 



Preparation of samples of food and feces for analysis 72 



Methods of analysis 73 



Urine 73 



Foods and feces 74 



Heat of combustion 74 



Body-weight measurements 75 



Body-surface measurements 75 



Anatomical photographs 76 



Activity records 76 



CUnical examination 77 



Blood examination 78 



Body temperature 78 



Alveolar air 79 



Technique for determining gaseous metabohsm during rest 79 



Respiratory- valve method 80 



Portable respiration apparatus 82 



General principle of apparatus ! 82 



Rotary air-impeller 83 



Air-circuit 84 



Test for rate of ventilation 85 



Absorbing system 85 



Spirometer 86 



Adjustment to subject 86 



Breathing appliances 87 



Air-moistener 87 



Oxygen supply 87 



Experimental procedure 88 



(III) 



