: niriTSION OF OABBB THROUGH ABSORBING SUBSTANCES. 



provided thtt air was from carbonic acid. The connexion between 

 UIM rMok and Henry's law of absorption is pointed out. 



The time of diffusion of hydrogen through caoutchouc is 3*6 times that of 

 an equal volume of carbonic acid The diffusion of a mixture of hydrogen and 

 carbonic acid takes place as if each gas diffused independently of the other 

 at a rate proportional to the part of the pressure which is due to that gas. 



We hope that Dr v. Wroblewski will continue his researches, and make 

 a complete investigation of the phenomena of diffusion through absorbing sub- 



