. CARBONATE ROCKS. 193 
Analyses A to J by F. W. Clarke, record No. 885. 
Ay B. Cc. D. E. F. G. H. I. J. 
7 
- 22 32 -21 25 2.94 8.50 2.99 5. 87 17.83 
-47 - 56 -76 - 56 23 .B3 65 +95 1.18 
51.24 | 49.38 | 51.95 | 51.52 | 51.51 | 47.29) 51.22 | 50.34 43. 85 
2. 09 1.93 1.44 2. 08 71 1.51 - 06 87 - 26 
41.07 | 40.39 | 41.53} 41.58] 41.59 | 39.00] 41.22] 39.62 34.31 
» 8.57 5.12 | - 3.07 3.19 2.64 3. 37 2. 23 3.21 2. 53 
98.66 | 97.70] 98.96 | 99.18] 99.62 | 100.40 | 98.37 | 100.36 99. 96 
K. Coarse shell mass, Senote. 
L. Coral rock, Salt Key Bank. 
M. Loggerhead Key. 
Analyses by L. G. Eakins, record No. 882. The following analyses, also by Eakins, 
No. 883, are included for comparison: P 
N. Coralline bottom, Barbados. 
O. Recent coral (Siderostria), Bermuda. 
K. L. M. N. oO. 
22 -1l - 20 1.17 23 
+18 /\.  .04 22 31 trace. 
54.87 | 53.54 | 53.54 | 46.45 55. 16 
. 64 +71 +78 5.15 -20 
43.89 | 43.87 | 43.71 | 43.40 43. 74 
el 1.13 -81 2.73 - 54 
| 99.91 | 99.40 | 99.26 | 99.21 99. 87 
2. MISCELLANEOUS ROCKS. 
A to M, inclusive. Thirteen borings from the artesian well at Key West. Partial 
analyses by Steiger, record No. 1553. The figures at tops of columns give depths in 
feet from which samples were taken. For a description of the limestones see E. O. 
Hovey, Bull. Mus. Comp. Zool., vol. 28, p. 63. 
A B. C. D. BE. | F. 
25| 100] 150] 350/ 600 | 775 
25 12] 3.52] 5.10 13 
1 
“i 08 40. .35 \ 14 
i ; 1.67] 2.50| 6.70 
42.84] 43.36 | 41.77] 40.72 | 43.60 
98.11 | 98.80 | 98.82 | 97.54 97.10 
G H I J. K a M 
HOB sicrciasatdcexs Ste ceaicnashaniee sate xplacsac Ream aegatrate se 05 07 19 - 06 05 03 07 
AlgOg, Fe2O3........-2..-2205 21 il 16 odd 17 17 16 
CaO. é 53.84 | 54.49 | 55.12) 54.48 | 53.90) 54.28 54. 02 
MgO 86 62 30 .73 | ~ 1.14 1.12 1.06 
CO... Josie woeemeceaeaet 42.87 | 43.29 | 43.28 | 43.38 | 43.37 | 43.13 43.20 
P20, is present. Is included with AlsOz and Fe202. 
