THE BRIGHTON FERTH^IZER. 323 



" The stock on hand is much less than has been known at this 

 season for several years, the demand being beyond the supply. 

 Within the past month some 4,000 tons of guano have been shipped 

 to England, where a large demand is springing up, as the result of 

 some small experimental shipments made last year. The "West 

 India trade is also increasing. The stock on hand is so small, and 

 the demand for oil and guano has increased so much, that an advance 

 in the price of both products is confidently looked for the coming 



season." 



I. — Animal Dust. 

 (Manufacttired by Messrs. Cbas. H. North & Co., Boston, Mass.) 



Volatile and animal organic matter, .... 79.10 per cent. 



Ash-constituents, 20.90 



Total phosphoric acid in ash, 8.20 " 



Total niti'ogen in animal matter, 6.09 " 



Moisture, 28.09 



Valuation per ton of 2,000 potinds. 



164 00 pounds of jDhosphoric acid in ash, $9 84 



121.80 " of nitrogen in animal matter, 30 45 



UO 29 



The mechanical condition of the material was very good, 

 and its relative proportion of nitrogen and phosphoric acid 

 that of a rich nitrogenous phosphate. 



Animal dust, like all animal matter, requires a certain state 

 of dryness to retain its composition unimpaired ; for it soon 

 begins to mould and to lose nitrogen in the form of ammonia. 



The sole objection which could be justly raised against the 

 above stated article consists in the fact that it will be very apt 

 in case of keeping to depreciate seriously in composition on 

 account of its unusually large percentage of moisture, — from 

 8 to 10 per cent, of the latter is a safer condition. 



n. — Acidulated Brigdtok Animal Dust. 



(Messrs. Jackson & Bowker, Boston, Mass.) 



Total phosphoric acid, 7.24 per cent. 



Soluble " " 6.08 



Reduced " " ...... 0.84 



Insoluble " " 0.32 



Nitrogen, 4,93 



Moisture 20.83 



