AGRICULTURE WITH CHEMISTRY. 17 



Dense inflammable air — or — carbonated hydrogenous 



gas; 

 rhlogi?ticatC(l air — or— azotic gas; 

 Vitriolic acid air — or — sulphureous gas; 

 Sulphurated inflammable ah' — or — sulphurated hy- 

 drogenous gas ; 

 Nitrous air — or — nitrous gas ; 

 Muriatic air — or — muriatic gas, 8cc. Sec. 



Atmospheric air is equally necessary to the vegetation 

 and growth of plants, as to the life of animals. By a 

 most beautiful arrangement in the ceconomy of nature, 

 the different processes of animal and vegetable respira- 

 tion are made mutually to assist each other. The par- 

 ticular gas or air thrown off by the respiration of the one, 

 contributes to the existence of the other. 



WATER. 



