INGESTION OF MIXED DIETS. 



313 



muscular rest for too long a time. This alternation is in accordance 

 with the usage of Professor Johansson and was our first attempt to 

 employ his method. The data for these quiet basal periods are given 

 in table 237. The results obtained in the food experiment, which are 

 given in table 236, show an increment in the carbon-dioxide production 

 for practically 5| hours after the food was given. The oxygen con- 

 sumption also showed an increase in the first three periods, while the 

 heat production continued above the basal value in 4 periods. Basal 

 values were obtained for all the factors of metabolism in the last period 

 of the experiment. 



TABLE 237. Basal metabolism of subject H. L. H., June 15, 1910, in bed calorimeter. 1 



(1-hour periods.) 



Nitrogen in urine per hour 9 h 40 m a. m. to 8 h 25 m p. m., 0.38 gram. 

 HEAVY BREAKFAST. 



During the third week of February 1906, the Middletown respiration 

 calorimeter was employed for studying the increment in the metab- 

 olism due to the eating of a large amount of food. The meal selected 

 for this purpose was breakfast, as it was believed that a subject could 

 eat a larger amount at this time rather than at the end of the day, 

 especially if his supper the night before had been light. Six experi- 

 ments with three subjects were made on this plan; they were all 8 hours 

 in length, with the measurements hi 2-hour periods. 



A. L. L., February 13, 1906. The breakfast for this experiment 

 consisted of 180 grams bread, 73 grams butter, 78 grams sugar, 311 

 grams oatmeal, 235 grams cream, 182 grams milk, 214 grams cocoa, 

 and 92 grams eggs, a total amount of 1,365 grams. The fuel value of 

 this food was 2,720 calories, 10 per cent of which came from protein, 

 52 per cent from fat, and 38 per cent from carbohydrates. The data 

 for the experiment are given in table 238. The basal value used for 

 comparison was drawn from three experiments within a week of the 

 food experiment. The total increment was 61 grams in the carbon- 

 dioxide production, 48 grams in the oxygen consumption, and 162 



