17 



and in no case has any tampering therewith been counseled, desired, or 

 permitted. The unfortunate fact that many of the data are contradic- 

 tory must be accepted without question. As the judge and the jury in 

 the light of contradictory evidence seek to decide which is the more 

 trustworthy, so have the data herein contained 'been interpreted with a 

 view, if possible, to give the greater weight to those which deserve the 

 j greater credit. 



To give an idea of the volume of work involved in this investigation 

 the following approximate estimate is given of the number of samples 

 analyzed and the number of record and calculation forms used, though 

 this but inadequately represents the detail of the work in all its phases. 



Number of samples analyzed, etc. 

 [Number of days of observation, 196.] 



Food samples 2,550 



Urine samples 1,175 



Feces samples 1,175 



Microscopical examinations : 



Urine 125 



Blood _. 60 



Total _ 5,085 



Number of record sheets, balances, etc. 



Menu sheets___ 3,618 



Daily sheets 1,206 



Amount and composition of food 1,206 



Food calculation sheets 75 



Feces : 



Amount and composition 35 



Calculation sheets 65 



Urine sheets 20 



Balance tables __ 200 



Total 6,425 



Each one of these analyses, forms, and tabulations was used in pre- 

 paring the summaries and conclusions which follow. 



SUMMARY OF RESULTS. 

 RATIO OF FOOD CONSUMED TO BODY WEIGHT. 



Of interest in connection with the other purposes of this investigation 

 is a study of the relation of the weight of food consumed to the body 

 weight which was made in detail during the first series of observation. 

 This study was made of each individual article of diet, and included a 

 statement of the ratio of the weight of food, including the water con- 

 sumed, and the ratio of the weight of the dry matter in the food to the 

 body weight. During the fore period, first series of observations, the 

 average daily weight of the moist food, including water drunk, was 4.20 



' cent of the total weight of the body ; during the preservative period 

 A 7717 2 



