834 



ADVENTURES IN RADIOISOTOPE RESEARCH 



Table 2. — Effect of acth and of Adrenaline, Alone and in Combination 



WITH X-IBBADIATION, ON THE EXHALATION OF TOTAL COg AND OF "COg AFTER 



Intraperitoneal Injection of NaH1*C0o 



Skipper et al. measured the amount of ^^COg expired by the mouse 

 after intraperitoneal injection of labelled bicarbonate. They found 66% 

 of the injected ^^COg to be exhaled within the first 10 minutes, 92.8% 

 within 1 hour and 96.1 within 24 hours. We found 1 — 2% to be expired 

 in the course of the 1st minute which includes the time of the injection 

 taking 6 seconds, the time of resorption, that of reaching the alveolar 

 space and of exhaling. Ten to sixteen % was found after 2 minutes and 

 65—66% after 10 minutes in agreement with Skippes's figure. 



