SCIENTIFIC AGRICULTURE. 



Carbonate of Lime, Bi-p'uospliate of Potash, 



Sulphate " Carbonate of Magnesia, 



Nitrate " Bi-carbonate " 



Phosphate " Sulphate 



Bi-phosphate " Nitrate *' 



Silicate of Potash, Phosphate " 



Bi-silicate " Sulphate of Alumina, 



Silicate of Soda, Phosphate " 



Bi-silicate " Silicate " 



Silicate of Lime, Carbonate of Iron, 



" Magnesia, Sulphate " 



Carbonate of Magnesia, 

 Sulphate 



These are not all the compounds found in plants; but they 

 are those which exist in most plants, and which are more or 

 less essential, in some quantity, to the healthy growth and 

 maturity of the various parts of the vegetable organization. 



