Composition and Value of Guano. 



211 



Table 10. — Saldanha Bay Guano. 



(Names of Ships unknown.) 



We have here arrived at the last step in the series. In this 

 kind of guano the ammonia becomes comparatively insignificant 

 in quantity, and as a natural consequence the proportion of earthy 

 phosphate attains its maximum. 

 In the 9 specimens described — 



The highest per centage of ammonia is . .2-49 

 The lowest „ ,, . . -94 

 The mean of the specimens 1*68 



Of the phosphate of lime — 



The highest number is 60 '96 



The lowest „ 49-01 



The mean „ 55*40 



The following analyses of Dr. Ure and Mr. Teschemacher bear 



out my own results : — 



Table 11. — Saldanha Bay Guano. 



The highest per centage of ammonia is 

 The lowest (omitting 86) ... 

 The mean of 9 specimens (also omitting 



2-10 

 1-25 

 1-56 



For some detailed analyses of this variety of Guano, see Appendix. 



p2 



