a Fluid passing through a Porous Plug. 

 Fig-. 2. 



891 



Table II. — Nitrogen. Inversion-points. 



Pressure. 



Tempe 



•ature. 



Atmos. 



Eedueed. 



Centigrade. 



Reduced. 



200 



7-40 



about 190 



about 360 



250 



925 



171 



3-50 



300 



11-10 



142 



334 



350 



12 95 



111 



302 



400 



14-80 



12 



2 24 



450 and 1 

 upwards. J 



1665 



None 



None 



3M 2 



