36 DR. FARADAY'S EXPERIMENTAL RESEARCHES IN ELECTRICITY. (SERIES XI.) 



7. Oxygen . 



8. Oxygen 



9. Oxygen . 

 10. Oxygen 

 IL Hydrogen. 



12. Hydrogen. 



13. Hydrogen. 



14. Hydrogen. 



15. Hydrogen. 



16. Hydrogen. 



17. Hydrogen. 



18. Nitrogen . 



19. Nitrogen . 



20. Nitrogen . 



21. Nitrogen . 



22. Carbonic oxide 



23. Carbonic oxide 



24. Nitrous oxide 



25. Ammonia . . 



Olefiant gas. 

 Nitrous gas. 

 Sulphurous acid. 

 Ammonia. 

 Carbonic acid. 

 Olefiant gas. 

 Sulphurous acid. 

 Fluo-silicic acid. 

 Ammonia. 



Arseniuretted hydrogen. 

 Sulphuretted hydrogen. 

 Olefiant gas. 

 Nitrous gas. 

 Nitrous oxide. 

 Ammonia. 

 Carbonic acid. 

 Olefiant gas. 

 Nitrous gas. 



. . Sulphurous acid. 



1292. Notwithstanding the striking contrasts of all kinds which these gases pre- 

 sent of property, of density, whether simple or compound, anions or cathions (665.), of 

 high or low pressure (1284. 1286.), hot or cold (1288.), not the least difference in 

 their capacity to favour or admit electrical induction through them could be per- 

 ceived. Considering the point established, that in all these gases induction takes 

 place by an action of contiguous particles, this is the more important, and adds one 

 to the many striking rehitions which hold between bodies having the gaseous condi- 

 tion and form. Another equally important electrical relation, which will be exa- 

 mined in the next paper, is that which the different gases have to each other at the 

 same pressure of causing the retention of the same or different degrees of charge upon 

 conductors in them. These two results appear to bear importantly upon the subject 

 of electro-chemical excitation and decomposition ; for as all these phenomena, dif- 

 ferent as they seem to be, must depend upon the electrical forces of the particles of 

 matter, the very distance at which they seem to stand from each other will do much, 

 if properly considered, to illustrate the principle by which they are held in one com- 

 mon bond, and subject, as they must be, to one common law. 



1293. It is just possible that the gases may differ from each other in their specific 

 inductive capacity, and yet by quantities so small as not to be distinguished in the 

 apparatus I have used. It must be remembered, however, that in the gaseous expe- 

 riments the gases occupy all the space 0, o, (fig. 1 .) between the inner and the outer 

 ball, except the small portion filled by the stem ; and the results, therefore, are twice 

 as delicate as those with solid dielectrics. 



