VALUATION OF FERTILIZERS, ETC. 457 



"Wood ash ought to be bought and sold on guaranty of 

 composition ; inferior wood ashes arc liable to eonic from all 

 sections of the country. 



The composition of the sample of leached ashes (No. II.) 

 resembles closely that of a previously reported one from 

 Detroit, Mich. (See Bulletin 5, No. 108; or First An- 

 nual Report, page 102.) 



[I. Canada ashes, sent on by H. C. Haskell, of Dcerficld, Mass.] 

 [II. Canada ashes, sent on by Edmund Ilobart, North Amherst, Mass.] 



Ashes. 



s. John B. Moore & Son, Concord, Mass.] 



[Sent on by Messr 



Moisture at 100° C, 

 Calcium oxide, . 

 Potassium oxide, 

 Magnesium oxide, 

 I'hosphoric acid, 

 Insoluble matter, 



Fertilizer, 



[Sent on by W. H. Earl & Co., Worcester, Mass.] 



Moisture at 100° C, 



Ash, • 



Organic and volatile matter, 



Per cent. 



8.60 

 35.80 

 4.25 

 3.91 

 2.01 

 16.08 



Per cent. 

 26.20 

 28.15 

 71.85 



Calcium oxide, 20.59 



Phosphoric acid, .45 



Nitrogen, 2.63 



Insoluble matter, 1.95 



As the nitrogen in this material is present in the form of 



