134 THE DEEP WELL WATERS OF SYDNEY, 
The residue scarcely tinged on ignition, nitrates were absent, 
and the water contained— 
Free ammonia ... ae ... O°O1 parts per million. 
Albuminoid iis ey es | «ys aoe be 
In 1876 the Colonial —_ Refining Company began to bore 
for water at their new works at Pyrmont, and at a depth of 200 
feet they obtained a fuels of w ater, of which the following is an 
analysis, made in August, 1876 
Carbonate “ calcium... 10°12 aiid per gallon) Deposit on 
Oxide of ir ie OOO ; boiling, 13°63 
Sulphate ms ccm meh 72: re 
nesium 376 ,, a 
Chloride peu magnesium || ee 
Po tassium o05: 4, ‘s 
sodium ... 21°65 ” ” 
inne oa besittion ie RSE os 
Total solids ... 49°86 ,, ie 
This sample of water was sent ina cask, which charged it with 
— matter, so that it was uscless to determine the organic 
The supply of water found at this depth proving pegs 5 
boring was resumed until at a depth of 427 feet a more abundan 
oie pumping the ® water mas ok rise within 30 feet of its 
original level, on the pumps being stopped. 
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