1889—90.] Dr J. Murray & Mr R. Irvine on Coral Reefs. 107 
Table XIII. Showing the Solubilities of Crystalline Forms of 
Carbonate of Lime in Sea : Water. 
Analysts— Anderson and Drysdale. 
Temperature 0 C. 
Exposure, in hours. 
Amount Soluble. 
In 
grammes 
CaC0 3 
per litre. 
In 
parts of 
SeaWater. 
One 
part in 
Calcspar, massive, ..... 
10 
47 
0-0075 
136,800 
5) )) ..... 
10 
120 
0-0046 
223,000 
)> ..... 
,, finely powdered, .... 
10 
396 
o-oooo 
10 
47 
0-0082 
125,000 
1 1 91 11 • • • 
10 
120 
0-0052 
197,000 
111111 .... 
10 
396 
o-oooo 
Table XIY. Showing Solubility in Pure Distilled Water. 
I 
d 
m 
U 
P 
O 
Amount Soluble. 
Analyst— Anderson. 
Temperature ° 
a 
i 
o 
& 
X 
In 
grammes 
CaC0 3 
per litre. 
In 
parts of 
SeaWater. 
One 
part in 
Calcspar, massive, ..... 
,, impalpable powder, 
Oculina coronalis (powdered), 
10 
120 
0-0146 
68,500 
39,800 
10 
46 
0-0251 
10 
96 
0-0285 
35,000 
Amorphous CaC0 3 (greater part crystallised 
out again immediately), .... 
10 
0-2480 
4,032 
Table XV. Showing Solubility in Pure Carbonic Acid Water 
at Atmospheric Pressure. 
Analyst — Drysdale. 
Temperature 0 C. 
Exposure, in hours. 
Amount Soluble. 
In 
grammes 
CaC0 3 
per litre. 
In 
parts of 
SeaWater. 
One 
part in 
Calcspar, massive, ..... 
10 
24 
0-0815 
12,270 
,, granular, 
10 
24 
0-1285 
7,780 
,, fine-grained, ..... 
10 
24 
0-2036 
4,910 
,, impalpable powder, 
10 
I 
24 
0-4720 
2,120 
