214 
ARTESIAN WELLS ON THE ATLANTIC COAST. 
[BULL. 138. 
Chisolm's mill, Charleston : The depth of this well is 425 feet. The 
following analysis by Dr. Eobertson is reported by C. U. Shepard: 1 
Analysis of water from well at Chisholm's mill, Charleston, S. C. 
Potassium sulphate.. 
Calcium sulphate 
Magnesium sulphate 
Magnesium chloride 
Sodium chloride , 
Sodium carhonate 
Sodium silicate 
Silica 
Loss on ignition , 
Total 
Grains per 
gallon. 
19.21 
4.12 
2.82 
4.85 
136. 89 
30.88 
0.66 
2.34 
13.17 
214.94 
Ashepoo Phosphate Company. 2 — This well is on Charleston Neck, 3h 
miles from the city hall in Charleston. It is 405 feet deep. The water 
was analyzed by C. U. Shepard, who reports that it contains 167 grains 
of solid matter per gallon, in which were found about 50 per cent of 
chloride of sodium and 25 per cent of carbonate of soda, the remainder 
consisting chiefly of sulphate of lime and magnesia, with silica. 
JEdisto Phosphate Company. — This well is 4 miles from the city hall in 
Charleston. Its depth is 375 feet. It is reported 2 to contain 149 grains 
of solid matter to the gallon, consisting of carbonate of soda, 28.63 
grains; sulphate of soda, 17.09 grains; chloride of sodium, 81.64 grains. 
Stono Phosphate Company. — The works of this company are situated 
about 4J miles from the city hall in Charleston. The depth of the well 
is 475 feet. Dr. C. U. Shepard reports 3 that the water contains the 
following mineral ingredients: 
Analysis of water from well of Stone Phosphate Company. 
Chloride of potassiun 
Chloride of sodium . . 
Carbonate of soda 
Sulphate of soda 
Sulphate of magnesia 
Sulphate of lime 
Silica 
Loss on ignition 
Total 
Grains per 
gallon. 
2.99 
74.46 
27.70 
4.90 
5.34 
4.99 
2.39 
3.63 
126.40 
1 Municipal report of the city of Charleston, S. C, 1881, p. 51. 
2 Loc. cit.j p. 52. 
3 Loc. cit., p. 53. 
