GUANO. 



283 



I add to these some analyses forwarded to me from the Edin 

 burgh Agricultural Chemical Association, by my esteemed friend, 

 Mr. John P. Norton. 



4.49 



&quot; Two Guanoes from Ichaboe. 



No. I. No. II. 



Water, 20.46 . .1800 



Organic matter and ammoniacal salts, . 44.96 . . 52.60 

 Sulphate of soda and potash, with 



common salt, 



Phosphates of lime and magnesia, . . 27.31 



Carbonate of lime, 0.07 &amp;gt; 



Silicious matter, 2.15 5 



3 per cent, free ammonia in No. I. . . 99.44 



&quot; These are fair samples of the Ichaboe guanoes. Their only 

 defect is too much water. 



&quot;Two South American Guanoes. 



Peruvian. 



Water and free ammonia, 3.14 



Organic matter and ammoniacal salts, . 63.52 

 Sulphate and muriate of soda, . . . 

 Phosphate of lime, and a little phos 

 phate of magnesia, 



Carbonates of lime and magnesia, 

 Insoluble silicious matter, .... 



5.02 

 22.20 



4.96 

 1.16 



100.00 



Bolivian. 



. 5.34 

 , 58.00 

 , 6.37 



, 25.27 



, 3.95 

 . 1.07 

 100.00. 



&quot; These are both most excellent guanoes. The small proportion 

 of water is remarkable, and the large quantity of organic matter 

 and ammoniacal salts. This first, and then the phosphates, are 

 the criteria of value. Carbonate of lime, sulphate arid muriate 

 of soda, &c., are valuable manures, but may be bought lower 

 than 6 or 8 per ton. 



