624 



Experiments 



at different pressures, and we thus obtain a curve Oab (graph and 

 vertical lines dotted) which, after rising very rapidly in the region 



<n i 



U O 



g <N 



rt o 



o 



i-l © 



2 g 



o 



o S 



•M S 2 



-a ..9 



o r-> ■- 1 

 o to —i 



"SS-s 



Si j 



« - 5 



* S .5 

 ** ■ TJ 



o u o 



8ll 



Oft 



►H (-1 >-( 



-8a 



sis 



u ca (h 

 S S v 



►■H ^ ft 



of zero to x k atmosphere, a little less in the region of Vz to 1 atmos- 

 phere, levels off considerably, beyond that pressure. 



The figures are no less clear; assuming that the zero of the 

 oxygen corresponds to the lethal decompression of 7 to 8 centi- 



