718 



ZOOPHYTES. 



" A portion of the massive shell of a large Chama, treated in a similar manner, afforded 

 for 100 parts the following result: 



Carbonate of lime, ..... 97-007 

 Precipitate by lime-water, . . . 2-600 



Organic matter, . . . * . 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 had it fallen within the scope of these researches, the subject 

 would have been farther inves igated. 



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

 the organic matter, is as follows : 



