680 Experiments 



July 15, at 8 in the morning (fasting), all the urine collected, 

 amounting to 211 cc. with only 7 gm. of urea. 



In the following 24 hours, he voids 130 cc, with 8.2 gm. of urea. 



Experiment CCXXXIX. June 9. Dog weighing 19.3 kilos. Kept for 

 4 days on a ration of 375 gm. of bread, 375 gm. of meat, and 500 gm. 

 of water. 



From June 9, at 10 o'clock in the morning to June 10, at 10:45, 

 voided 276 cc. of urine, which analyzed by the Grehant method con- 

 tains 27.9 gm. of urea. 



June 10, from 11:30 in the morning to 6:30 in the evening, kept 

 between 25 and 30 cm. of pressure. On leaving the apparatus, he is 

 very much weakened, almost refusing to stand up. Catheterization 

 extracts only a few drops of urine. 



June 11, at 10:30 in the morning, the catheter brings 390 cc. of 

 clear urine, containing neither sugar nor albumen. It gives 20.7 gm. 

 of urea. 



Experiment CCXL. June 17. Same dog, kept on the same diet, but 

 not confined. June 17, at 10 in the morning, placed in the apparatus; 

 June 18, at the same hour, gave 370 cc. of urine, containing 27.5 gm. 

 of urea (Yvon method). 



June 18, from 11 to 5:30 kept between 36 and 38 cm. pressure. 

 Respiratory rate rises from 16 to 24 and even 30. Leaves the appara- 

 tus a little weakened; rectal temperature has fallen from 39.2° to 39.0°. 



Catheterization yields 100 cc. of urine, without sugar, containing 

 7.5 gm. of urea; the next day at noon produces 130 cc. of urine con- 

 taining 6 gm. of urea; about 13.5 gm. in the 24 hours. 



Experiment CCXLI. June 23. Same dog; regular diet, but a some- 

 what smaller quantity. 



At normal pressure, in 24 hours, yields 250 cc. of urine contain- 

 ing 20 gm. of urea (Yvon method). 



From 1 o'clock to 6:30 subjected to a pressure of 38 cm. Voids 

 in the 24 hours 220 cc. of urine containing 14.4 gm. of urea. 



The next day, at normal pressure, yields in 24 hours 36.8 gm. of 

 urea in 600 cc. of urine. 



Experiment CCXLII. October 26. Dog weighing 20.5 kilos; kept for 

 preceding 10 days on the following daily ration: 250 gm. meat, 250 

 gm. bread, 500 gm. water. 



From October 26, at 9 in the morning, to October 27, at 9:30, 

 voids 336 cc. of urine containing 23.4 gm. of urea (Yvon method). 



October 27, from 9:45 to 5, subjected to a pressure varying from 

 30 to 40 cm. The next day, at 9:45, yields 570 cc. of urine, with 23.5 

 gm. of urea. 



In the following 24 hours, yields 330 cc. of urine with 17.3 gm. of 

 urea. 



The day after, 390 cc. of urine, with 21.8 gm. of urea. 



These experiments show conclusively that a stay of several 

 hours in an atmosphere whose pressure has been lowered by more 



