228 



BOARD OF AGRICULTURE. 



This guano is deficient in organic matter, and consists of 

 from fifty to fifty-one per cent of phosphate of lime, in a fine 

 mechanical condition, and from twelve to fourteen per cent 

 of carbonate of lime. 



n. 



Soluble South- Carolina Phosphate. 



(Benjamin Kandall, Boston, Mass. 



Moisture lost at 100° C. 

 Total phosphoric acid • 

 Soluble phosphoric acid . 

 Insoluble phosphoric acid 

 Insoluble matter, sand, etc. 



Thomas Aubin, agent, Boston, Mass.) 



Per cent. 



5.16 

 19.32 



7.38 

 11.94 



8.31 



Valuation per ton of two thousand pounds : — 



147.6 pounds of soluble phosphoric acid 

 238.8 pounds of insoluble phosphoric acid 



$17 72 

 8 36 



$26 08 



Bone Fertilizers. 



Ground Bones. 



(Hargrave's Manufacturing Company, Fall River, Mass.) 



Per cent. 



Moisture lost at 100° C 8.52 



Organic and volatile matter 46.64 



Ash constituents ....... 53.96 



Total phosphoric acid 21 32 



Total nitrogen 2.34 



Insoluble matter 1.16 



II. 



Fine Bones. 



(W. H. Bowker & Company, Boston Mass. ; collected of Mr. Wescott, 



Amherst, Mass.) 



Per cent. 



