248 



THE EFFECTS OF DECOMPRESSION 



The experiment was repeated with, another monkey (Rhesus). 

 After being subjected to 8 atm. air for 4 hours 2J hours were 

 taken to decompress. There was not the slightest sign of de- 

 compression symptoms. 



This experiment was repeated three or four times a week for 

 a month, the time for decompression being in each case 2 hours. 



FlG. 17. Nitrogen Bubbles in Vessel of Brain of Mouse, a result 

 of rapid decompression ( F May son, L Hill, and MacLeod). 



There was never the slightest sign of decompression symptoms, 

 and the monkey remained in perfect health and maintained its 

 weight. Towards the end of the period of compression it some- 

 times seemed to become sleepy. The body temperature remained 

 normal. 



The microscopical examination of the organs of animals killed 

 by decompression show that gas-bubbles form small cyst-like 



