222 AMERICAN MANURES. 



E. FRANK COE'S SUPERPHOSPHATE 

 OF LIME. 



The above Superphosphate, from which sam- 

 ples for analyses were selected, was purchased 

 from Graham, Emlen & Passmore, the manufac- 

 turer's agents, Philadelphia. Its mechanical con- 

 dition was good, and we should think it could be 

 easily applied with a drill. We select the fol- 

 lowing analyses from the manufacturer's circu- 

 lar; the first was made by Dr. G. A. Liebig, Bal- 

 timore, dated August 3d, 1854. The second was 

 made by Professor S. W. Johnson, of Yale Col- 

 lege, dated May 23d, 1865. If the reader will 

 compare these analyses with the analyses of this 

 Superphosphate as purchased by us, he will see 

 how this celebrated fertilizer has gradually de- 

 teriorated in value ; comment is unnecessary : 



ANALYSIS BY -DR LIEBIG, GIVES : 



Phosphoric Acid contained in Biphosphate of Lime, 12-11 



Phosphoric Acid free (anhydrous) 4-80 



Total Phosphoric acid (soluble) 16'91 



Phosphate of Iron and Ammonia 0'34 



Alkaline Salts -41 



Organic matter capable of producing Ammonia 3*65 



"Water as Moisture and Loss 15-87 



ANALYSIS BY PROFESSOR JOHNSON, GIVES : 



Water expelled at 212 12-18 



Soluble Phosphoric Acid 943 



Insoluble Phosphoric Acid TG5 



Ammonia in organic and volatile mutters 2-76 



