24 THF CONNECTICUT AGRICULTURAL 



ANALYSES AND VALUATIONS OF FERTILIZERS. 



The classification of the Fertilizers analyzed in the Station 

 Laboratory from Nov. 1st, 1881, to Sept. 1st, 1882, is as follows: 



13 phosphate rocks and phosphatic (non-nitrogenous) guanos. 



4 plain (non-nitrogenous) superphosphates. 

 49 nitrogenous (ammoniated) superphosphates and guanos. 

 23 special fertilizers or "formulas." 

 18 bone manures. 



2 fish manures. 



6 nitrates. 



1 snlphate of ammonia. 



6 dried blood and tankage. 



1 dried meat. 



4 castor pomace and cotton seed meal. 



1 fowl manure. 



1 compost of tripe refuse. 



1 damaged tea. 



9 potash salts. 



1 plaster. 



2 slaked lime. 

 2 limestones. . 



2 marls. 



, 1 "Norfolk Fertilizer." 

 1 marine mud. 



3 mucks. 



151 



Of this number 34 were analyzed for private parties, and are 

 only noticed in the following pages when the results are of general 

 interest and value. 



Native Phosphates. 



Phosphate Rock, 708. This sample, sent by H. H. Austin, 

 Sufiield, and reported to the Station as for sale by Horatio Lothrop 

 of the same place, was analyzed with the following result : 



Phosphoric acid, _ — 37. 84 



Costperton, |19.00 



Cost of phosphoric acid per pound, 2|- cts. 



