Chemical Absorption of Gases. 



361 



CI in Hydrogen. 



Barometer 



, 760-7. 



Time, 

 minutes. 



Manometer- 

 reading, 

 millimetres. 

 n. 



Difference of 



pressures. 



n' — n. 



Ratio. 

 n"—n' 



n'—n ' 







29 







1 



340-9 



311-9 





2 



368-6 



2V7 



•088 



3 



381-2 



12-6 



*455 



4 



390-3 



91 



•722 



5 



398 



7-7 



•846 



T 



408-8 



10-8 





10 



420-2 



11-4 





15 



429-2 



9 





20 



4341 



4-9 





25 



4374 



3-3 





30 



438-9 



1-5 





40 



440-4 



1-5 





50 



4414 



1 





60 



442-2 



•8 





Sulphurous Anhydride. — Prepared in the ordinary way by 

 the action of strong hydric sulphate on pure copper-turnings 

 previously ignited in a current of coal-gas. It was considered 

 at first that there would be some difficulty experienced with 

 this gas, owing to its absorption by the water in the mano- 

 meter, standing for so long a time as twenty hours ; but this 

 was scarcely perceptible. 



From a considerable number of experiments the following 

 are selected: — 



SO, 



5 in Air. Barometer, 



771. 



Time, 

 minutes. 



Manometer- 

 reading, 

 millimetres, 

 n. 



Difference of 



pressures. 



n'—n. 



Ratio. 



n" — n' 



n'—n 







39-7 







1 



2934 



253-7 





2 



360-6 



67-2 



•265 



3 



386-4 



25-8 



•384 



4 



398-6 



12-2 



•473 



5 ,. 



404-8 



6-2 



•508 



7 



411-7 



6-9 





10 



416-4 



4-7 





15 



421-6 



5-2 





20 



425-3 



3-7 





25 



427-6 



23 





30 



429-4 



1-8 





40 



433-2 



3-8 





50 



434-3 



11 





60 



435-2 



•9 





Phil. May. S. 5. Vol. 17. No. 107. May 1884. 2 B 



