178 Scientific Intellige nce—Hydrology. 
of foraminiferee (in bulk). The specimens now before me go to 1050 
fathoms, and there is no longer sand containing foraminiferee, 
but foraminiferee containing little or no sand. The grains of sand 
have to be searched for carefully under the microscope to be noticed 
at all. The species are the same as found in the deep-sea sounding, 
but the specimens look fresher and appear somewhat larger. The 
Globigerina rosea of D’Orbigny, which forms the majority, has fre- 
quently that delicate pink colour to which it owes its name, but 
which I cannot recollect to have noticed in northern specimens, 
There are also some specimens of coral and dead shells from the 
depths of 1050 fathoms. The corals do not look much worn, but 
still appear to have been dead. There were some delicate living 
shells from depths beyond 500 fathoms.”’—(American Annual of 
Scientific Discovery for 1854, p. 309.) 
5. Artesian Well, Charleston, §. C.—The following interesting 
table of the temperature of the Charleston well, at various depths, has 
been prepared by Professor Hume, of the State Military Academy. 
Degrees Fahr. 
At the surface, the temperature of the water is— 68 
50 | feet the temperature is. : : 68* 
100 of : 68 
200 70 
300 713 
400 72 
500 73 
600 742 
700 , 763+ 
800 80 
900 822 
1000 84 
1065 86 
1106 88 
From this table it will be seen that the increase of temperature by 
no means tallies with the increase of depth, The greatest increase 
of temperature seems to occur about those places at which streams 
of water were encountered, and the variations may be due to the 
fact that the well passed through some, as they descended from a 
higher and less heated, and through others as they descended from 
a lower and hotter level, and while the waters of both classes were 
still to some extent influenced by their previous temperature. The 
average rate of increase of temperature—l degree F. for every. fifty- 
two and a half feet—agrees with the results heretofore obtained. in 
other ‘alias Annual of Scientific Discovery in. 1854, 
p. 300. 
—— 
* At 58 eocene commences, t At 708 cretaceous commences. 
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