ee 
THE DEEP WELL WATERS OF SYDNEY. 137 
a depth of 380 feet water was again struck in the end of January. 
The boring rods seemed to have suddenly dropped, as some of 
the screw _— were stripped for a length of two and a half 
inches. The following is an analysis of a ‘sample drawn on the 
5th February— 
Carbonate of calcium... 4°20 grains per gallon. mi on 
Oxide of iron traces. boiling, 4°20 
Alumina and silica ... 442 ,, ” 
Sulphate of calcium ... 2:14 ,, ” 
. “Soong oh 1:20 =, ” 
Chloride of m4 O06 +4; ” 
re sodium . _ 15°59 nd ” 
po otassium.. traces. 
Loss on ignition --. oe, ” 
Total eee 3255 i ” PI 
Total chlorine ... 995 ,, ” 
The residue darkened slightly on ignition, nitrates were absent, 
and the water contained— 
Free ammonia ss) AOR hg per million. 
Albuminoid wel OO 
This well was drawn upon generally to the extend of 10,000 
gallons s per day, and on the 8th of May, when the ma ximu m 
yield of the well had been siete from it during the previous 
taediy. four hours, a sample was taken and examined for chlorine 
and ammonia, and was found to contain— 
Chlorine ... ... 12°00 grains per gallon. 
ree ammonia... 0" - pee su million. 
submarine ‘I ring in n the Gulf of Mexico, some ¢ considers 
tance from the South American coast, which converts so 
i iat a fresh water lake that it is inhabited by the fresh 
(“Trayels’’) ; also, by Buchanan, 
who found “an abundant spring - of fresh water in the Indian 
Ocean, 125 miles from Chittagong and 100 miles froin the coast 
btn Sencerenie, (¢ otitempatt’ 8 Cytlopellis: Art. ‘Artesian 
j 8 | E 
Wavcl 
