130 ZOOPHYTES. 
Madrepora. Madrepora. Madrepora. Madrepora. Madrepora. 
No, 12 (V.) No. 14. No. 15. No. 16. No. 17. 
Carbonate of lime, 94 881 93-297 94-143 94.239 93-59 
Phosphates and fluorides, 0-710 2-450 0-900 0-500 0-500 
Organic matter, 4-409 4-253 4-957 5261 5-91 
Pocillopora. Pocillopora. Pocillopora. Pocillopora. Pocillopora. 
No. 19. No. 20. No. 21. No. 22 (VI.) No. 23. 
Carbonate of lime, 94-659 93-60 95-001 93-848 94-583 
Phosphates and fluorides, 0-550 1:90 1-450 0-550 1-050 
Organic matter, 4-791 4:50 3-549 5602 4.397 
Millepora. Heliopora. Gemmipora. Meandrina. Astrea. 
No. 24. No. 25. No. 26. No. 28 (VII.) No. 29 (VIII.) 
Carbonate of lime, 94-226 95-545 92-751 93-559 96-471 
Phosphates and fluorides, 1-200 - 1:000 1-500 0-910 0-802 
Organic matter, 4-574 3-455 5-749 5536 2-727 
Astrea. Astrea. Astrea. Astrea. Astrea. 
No. 30 (IX.) No. 31. No. 33. No. 34. No. 35. 
Carbonate of lime, 96-551 94-810 91-782 93-923 91-112 
Phosphates and fluorides, 0-262 0-900 2-100 0-500 950 
Organic matter, 3-187 4.290 6-118 5577 8-338 
‘“*A portion of the massive shell of a large Chama, treated in a similar manner, afforded 
for 100 parts the following result : 
oO 
Carbonate of lime, . a : - . 97-007 
Precipitate by lime-water, 7 : : 2-600 
Organic matter, 5 2 - A 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 investigated. 
“The per-centage of phosphates and fluorides in the above analyses, after excluding 
the organic matter, is as follows: 
Specimens. |Phgaphatesand|| specimens, | Phenphatssand|| Specimens, | Pheephatge and 
| | — —— ———— ——— ee 
No1(L) | 2095 || 12(W) 0-743 No. 24 1.258 
| 3 0-945 14 2.562 25 1.036 
| 4 0.992 15 0.947 26 1-593 
5 1-637 16 0-528 28 (VIL.) 0-964 
| 6 0-774 17 0-537 | 29(VII1.) 0-825 
| 7 2.177 19 0578 || 30(IX) 0.270 
8 1-710 20 1.990 31 1-040 
9 (1) 0-780 21 1504 33 2114 
|  10(IIE)| 0642 22 (VI.) ose3 || 34 0-529 
LIV.) 0-314 23 1-099 35 0-600 
