130 



Z O O P II Y T E S. 



" A portion ofthe ma.ssive shell ofa large Chama, treated in a similar manner, afforded 

 for 100 parts the Ibllowing result: 



Carbonate ot'lime, . 

 Precipitate bj' lime-water, 

 Org-anic matter, 



97-007 

 2-600 

 0-398 



" The amount of organic matter is here very small ; while the precipitate by lime-water 

 is large. The examination of other shells with reference to this point, would have been 

 highly interesting, and liad it fallen within the scope of these researches, the subject 

 would have been farther investigated. 



" The per-centage of phosphates and fluorides in the above analyses, after e-xcluding 

 the organic matter, is as follows : 



