282 EUROPEAN AGRICULTURE. 



&quot;No. 8. Bird Islands ; Algoa Bay. 



&quot; 100 parts contain 2J parts ammonia, combined as in No. 4, 

 forming, of 



Ammoniacal salts, 10 J 



Animal organic matter, 8J 



Sulphate and muriate of potash, 2J 



Phosphate of lime arid magnesia, (no oxalate lime,) ... 62 



Sand, 1J 



Water, 15 



100 



&quot;No. 8 contains no uric acid. 



&quot;No. 1 to 3 are South American guanoes. 

 &quot;No. 4 to 8 are African guanoes. 



&quot; I have examined guano from other localities, but as I do not 

 know those localities, I have omitted them in the list. 



&quot;Guano Testing. 



&quot; 1. A small portion, about 100 grains, mixed and rubbed with 

 10 parts of chalk to 1 part of quick-lime, should give out a 

 strong smell of ammonia ; and on holding over the mixture a 

 glass rod moistened with muriatic acid, a dense white vapor 

 should be given off. If this eifect does not take place, the 

 guano will contain very little ammoniacal salts. 



&quot; 2. 100 grains guano, heated to redness in a Hessian crucible, 

 should leave a white ash. This white ash should be nearly 

 soluble in dilute muriatic acid. The residue should not exceed 

 10 grains ; in good guano, the residue would be only 1 or 2 

 grains. 



&quot; The quantity of white ash will vary from 30 to 60 per cent., 

 according to the nature of the guano. 



&quot;Yours truly, 



&quot;E. F. TESCHEMACHER. 



&quot;No. 2 Park Terrace, HIGHBURY, 

 24 January, 1845.&quot; 



