26 August Krogh and Marie Krogh. 



Exp. II. Two male subjects A. S. age 48, weight 73.1 kg. Ap- 

 parently healthy but some bronchial ronchi. N. D. age 55, weigh 

 61.8 kg. Apparently healthy. Slight ronchi. The exp. began on 

 the ^"/t ^t 4.30 p. m. and was concluded on the ^^/7 at 11 a. m. The 

 subjects were fed on carbohydrates on the first and second day, on 

 meat on the third and again on carbohydrates on the fourth and fifth. 

 On the meat day A. S. consumed 1800 gr. and TV. D. 1700 gr. The 

 subjects were occupied during most of the time with carving in ivory. 

 They slept from 11 to 5 or 6. Final weights 73.7 kg. and 63.0 resp. 



Exp. III. Two male subjects B. W. age 57, weight 65 .5 kg. 

 Healthy. A. M. age 28, weight 74 kg. Healthy. The exp. began on 

 the ^/s at 3 p. m. and was concluded on the ^/g at 3 p. m. The subjects 

 were fed on meat for three consecutive days ^s — ^/s ^nd on 

 carbohydrates on the first and last day. B. W. consumed on 

 the three days 1247, 1156 and 830 gr. and A. M. 1268, 1287 and 

 874 gr. 



These subjects were very quiet and extremely regular in their 

 habits. They did no work, except playing cards, and slept with great 

 regularity from 10 — 6. Final weights 65,5 kg. and 73.3 kg. resp. 



Exp. IV. Subjects A. S. and N. D. same as in Exp. II. The exp. 

 began on the ^Vs H ^- i^- ^^^ was concluded ^^/g 5 p. m. 



The subjects were given very little food on the 11th. On the 

 12th they had a large meal of meat in the forenoon (each about 1000 gr.) 

 and again on the 13th at 5 in the afternoon (750 gr.). On the last 

 day they were fed regularly chiefly on carbohydrates. The subjects 

 were occupied with making a model of the respiration chamber and 

 worked lightly during most of the day time. They slept regularly 

 from 10 — 6. 



In the three last experiments complete determinations were made 

 of the respiratory exchange (Appendix IV, Tables II, III, IV). 



The food totals for each experiment and each individual are given 

 below (Table 2). 



The food turned out, as shown by the analyses, to be of a more 

 mixed character than we had expected and especially to contain on 

 the meat days a very large amount of fat. The seal meat used in 

 most cases contained on an average according to the analyses of the 

 boiled meat 4.1^0 nitrogen and about 10% fat (ether extract) while 

 the heat of combustion per gr. amounted to 2.2 Calories. From a 

 comparison of the ascertained heat of combustion with the chemical 

 analyses we find that it must have contained a considerable propor- 

 tion of glycogen varying from 1.1 — 4% (Average 2.5 %)• We found 

 by one determination in Greenland that the loss of weight on boiling 

 amounted to 23 7o of the fresh weight. 



The raw meat must therefore have contained 3.15 % ^^ • = 1^-^ "/0 

 protein, 8 ^Iq fat and 2 "/0 glycogen. 



