GUANO 



3. Constituents insoluble in water (in 100 parts'). 



745 



We may also quote the following analysis by Dr. Ure, of guano, imported from 

 Bolivia, by the ' Mary Anne,' being the first cargo thence imported. 



It was of a pale yellow-brown colour, dry, partly pulverulent, partly concreted, in 

 small lumps. Its mean specific gravity was T63. 



The soluble portion was found to contain : 



Urea . . . 

 Sulphate of potash 

 Chloride of sodium 

 Phosphate of ammonia 

 Oxalate of ammonia 



The insoluble portion contained : 



Silica . . . , . , *.' r -'. 



Phosphate of lime 



Phosphate of magnesia and ammonia . 



Urate of ammonia 



Undefined nitrogenised organic matter, yielding by 

 combustion with soda-lime 17 '05 parts of ammonia 



The total quantity of ammonia yielded by it was 20-95 per cent. 



5-0 

 7-9 

 5-0 



0-6 



24-0 



2-25 



9-00 



1-25 



15-27 



41-73 

 69-50 



Analysis of Cincha Island Guano, ( Ure.) 



Matter soluble in water .' , ; . '' V . 47'00 

 consisting of 



Sulphate of potash, with a little sulphate of soda . .6-00 



Muriate of ammonia . . . . - , : ': * . 3 '00 



Phosphate of ammonia 14-32 



Sesquicarbonate of ammonia I'OO 



Sulphate of ammonia . . , . . . . . . . . . . 2-00 



Oxalate of ammonia 3-23 



Water . 8'50 



Soluble organic matter and urea 8*95 



47-00 



Matter insoluble in water 53*00 



consisting of 



Silica . . .-...*. ; f ^- * . . . 1'25 



Undefined organic matter 9-52 



Urate of ammonia 1473 



Oxalate of lime V. 1 ; 00? 



Subphosphate of lime ' . 22-00 



Phosphate of magnesia and ammonia . . . 4-50 



Ammonia 



0-95 

 4-62 

 0-34 

 0-50 

 0-89 



1-23 



0-32 



53-00 



8-35 



