136 THE DEEP WELL WATERS OF SYDNEY. 
This analysis shows mere traces of iron, and it seems likely 
that the iron in the previous sample wa s due to particles of iron 
abraded from the boring reds and left a eey to the bore. It 
showed, however, a notable increase in the saline constituents of 
the water, — especially i in the amount of chlorine, which showed 
4 grains allon more than the first. To see whether any 
further increase took place the water was examined regularly for 
some weeks, the chlorine being determined and also the free and 
albuminoid ammonia, the amounts of which w ere also found to 
the chlorine being stated in grains per gallon, and ude snuioaie 
in parts per million :— 
Chlorine. Free ammonia. Albumenoid. 
Mar. 12 21°30 0:24 O48 
eo ae 20°66 0°32 038 
nae 21°08 0°30 0°36 
21°09 0°37 0:39 
Apr. 8 20°87 0°35 0°38 
” 21°30 0°36 0°39 
Average 21-0. 0397 
The upper part of the well was at this time carefully examined 
to find whether anv percolation from the waters of the harbour 
was taking place which would account for this result, as some 
blastin ng operatio ns had been carried on in the neighbourhoty 
but for the whole hundred feet the walls were found to be dr ry. 
e second ang! ut down for basen is that of 7 plots pa i 
iron 1°55 grains per gallon. 
sagt of calesym ss 68, ee 
s magnesium ... ‘61 ,, ie 
Chloride ee 2 eae i“ 
m sodium 7 1866 : 
potassium ... traces. 
Bh on ignition ii BBQ ay, i 
Total solids si CONT 
” ” 
The readies ontained = tinged on ignition, nitrates were absent, and 
the water c 
amm 0 01 parts per million. 
‘Albumin cin ammonia 
= Saeed of water obtainable he this depth being insufficient 
use, and the Sugar Company having obtained an abun- 
pes supply at a greater depth, ating was recommenced, and at 
cn imeetmear ree ahs Sh coe ae 
