26 



PHYSIOLOGY OF THE NEW-BORN INFANT. 



of cane sugar per kilogram of the dog's body-weight. From the records 

 of the body-temperature of the dog during and after a meal, consisting 

 of cane sugar or of isodynamic quantities of bread, Mosso concludes 

 that about an hour after taking the sugar is all absorbed, small quanti- 

 ties being used entirely for the formation of heat and larger deposits 

 being used in part for the same purpose and in part stored for future 

 consumption. Bread is utilized in the same way, but more slowly, 

 since it takes longer before the other food elements in the bread are 

 oxidized. The bread as a whole, therefore, can not develop a heat 

 influence so suddenly as can isodynamic quantities of sugar. 



TABLE 4. 



breast-fed 1 hour before experiment; cried somewhat for about 8 minutes; passage of urine and 

 feces; during the last 5 minutes asleep. See experiment 27, table 5. 



2 Breast-fed; same as subject in experiment 12, table 1; breast-fed 1 hour previously; awake and 

 satisfied. 



3 Same as subject in 17 and 18 in table 2; slight jaundice; breast-fed 2 hours previous to experi- 

 ment; cried 3 minutes; awake and lively, sucking its fingers. 



4 Breast-fed 2 hours and again just before experiment; asleep or drowsy; only a few movements; 

 no signs of hunger. 



B Incubator infant; weighed at birth 1,950 grams; takes to the breast poorly; is put to the breast 

 every 2 hours; last time just previous to experiment; fast asleep. This applies to 

 experiment 16 as well. 



8 Bottle and breast; last meal 3 hours and again just previous to experiment; awake and lively. 

 See experiment 29, table 5. 



'Breast; last meal 3 hours and again just before experiment; violently crying more than two- 

 thirds of the time; rest of the time in light sleep. See experiment 31, table 5. 



8 Breast; born 2 to 3 weeks prematurely; breast-fed altogether 2 times, 5 hours before and again 

 just before experiment; took to breast well; absolutely quiet, half and wholly asleep. 



An individual on a liberal mixed diet does not show variations in the 

 respiratory quotient which would suggest a selective choice of the 

 different foodstuffs. For instance, he does not have an hour after a 

 meal a respiratory quotient of 1, 2 hours after a quotient of 0.8, and 3 

 hours after 0.7, but would, at any time selected, have a quotient which 

 varies but little from 0.88, for example. The reason for this is that the 

 nourishment is plentiful, or, in other words, that there is in the circu- 

 lation almost the same mixture of all three chief nutrients or their 



