284 EUROPEAN AGRICULTURE. 



&quot; Artificial Guano, (Potter s.) 



Water, 14.55 



Organic matter, 17.32 



Salts soluble in water, consisting of common salt and 

 gypsum, with a small quantity of potash and am- 



moniacal salts, 40.43 



Phosphate and carbonate of lime, 11.61 



Coarse sand, with bits of gypsum, 16.06 



99.97 



&quot; This, therefore, contains 30 per cent, of water and sand. One 

 by the same maker, previously examined, had about 30 per cent, 

 of sand alone.&quot; 



The following is from a chemist of the highest scientific 

 character, Dr. Ure : 



&quot; Reserving, for the present, the more particular analyses, the 

 following may be offered as the average result of those I have 

 made of genuine guano, in reference to its agricultural value : 



&quot; Azotized organic matter, including urate of ammonia, 

 and capable of affording from 8 to 17 per cent, of 

 ammonia by slow decomposition in the soil, . . .50.0 



Water, 11.0 



Phosphate of lime, 25.0 



Ammonia, phosphate of magnesia, phosphate of ammo 

 nia, and oxalate of ammonia, containing from 4 to 



9 per cent, of ammonia, 13.0 



Silicious matter from the crops of the birds, .... 1.0 



100.0.&quot; 



