ILLUMINATING GAS WITH PRESSURE CREIGHTON. 



93 



to condensation of a small portion of the heavy hydrocarbons 

 while the gas was under the higher pressures. From the data 

 contained in the table and from the curves it will be seen that, 

 in accordance with Graham's diffusion law, with decrease in 

 pressure the percentage increase for carbon monoxide is less 

 than that for carbon dioxide, and this in turn is less than that 

 of illuminants. 



FIG. 1 



70 



60 



50 



^o 



30 



ao 





^ 











< 



l.C\^ 













^^ 



\ 

















^ 











JU^ 





L- 







COa 1 





3ia.5 "^^(i '87.S '2S 41-S 



PRESSURE IN LBS PER SQ. IN. 



