resembles, in odor aud taste, the volatile mustard oil (Ehodanallyl) . 

 Some investigators assume their identity. The amount of this product, 

 according to the statement of good observers, depends largely either 

 on the general character of the soil, or on the presence of some peculiar 

 constituent in the latter. 



It would be not without interest to study the effect of gypsum, or 

 of sulphate of potash, as a special fertilizer, on the character of the 

 roots raised in their presence. 



Relative proportion of the essential ash constituents, soluble in 

 acids : 



Potassium oxide, 41.37 per cent. 37.92 per cent. 



Sodium oxide, 3.39 " 8.84 " 



Calcium oxide, 38.62 " 35.95 



Magnesium oxide, 14.50 " 11.40 " 



Phosphoric acid, 1.80 ^' 4.32 " 



Ferric oxide, 0.32 " 1.57 " 



The analysis has been carried out at the request of garden farmers 

 in the eastern part of the State. The sample was collected from the 

 fields of the College, at the time when the plant was blooming. The 

 results may give some more definite basis for an advantageous mode 

 of manuring. 



FERTILIZER ANALYSES. 



282. WOOD ASHES. 



I, II. Ashes sent on from Beverley, Mass. 



III. Canada ashes, sent on by the secretary of the Greenfield 



Farmers' Club. 



IV. Sent on for examination from Chicopee, Mass. 



