216 



SCIENTIFIC AGRICULTURE. 



TABLES OF ANALYSIS. 



Talks showing the relative proportions of inorganic com- 

 pounds In the ashes of several cultivated plants. 

 The tables are taken from Prof. Johnston's Agricultural 

 Chemistry, and are supposed to be nearly correct: analysis 

 of different varieties and qualities of the same plants, vary- 

 slightly ; but still, for all practical purposes, the tables here 

 given are sufficiently accurate, being probably as near the real 

 constitution of them, as it is possible to obtain. 



ASH OF WHEAT. 



According to Sprengel's analysis, 1000 Ibs. of wheat leave 

 11.77 Ibs. of ashes, and 1000 Ibs. of straw leave 35.18 Ibs. 

 of ash. after burning. 



This ash consists of 



Potash, 

 Soda, 

 Lime, 

 Magnesia, 



Grain of Wheat. 

 2.25 Ibs. 

 2.40 

 0.96 

 0.90 



Straw of Wheat. 

 0.20 -Ibs. 

 0.29 

 2.40 

 0.32 



