82 
Nymagee, Byerock (No. 1), Lewis Ponds, or the Parramatta 
Water Supply (second sample), they bearing direct evidence of 
haying been heavily polluted with organic matter. 
*Tt is a well known fact that a large population may drink a 
sewage polluted water with the utmost impunity under certain 
conditions, and yet the death rates from fever and dysentery, and 
all other diseases supposed to be propagated by the water may be 
remarkably low, in comparison with places drinking a pure water. 
On the other hand the water if containing diseased germs would 
propagate disease, and so be as fatal as a dose of poison.—(A. 
JOHN C. H. MINGAYE. 
Wynter Blyth.) 
at Broken Hill :— 
(11.) Jenkin’s Quarry. 
Soluble saline matter ... 
Insoluble mineral matter 
Total solids ... 
Analysis of total solids— 
Chloride of Sodium 
Sulphate 
of Soda 
| Sulphate of Lime 
Sulphate of Magnesia ... 
Carbonate of Lime 
Carbonate of Magnesia 
Alkaline Carbonates, etc. 
Oxide of Iron ... 
Alumina 
Silica 
Grains per Gallon. 
107-724 
11:220 
118-944 
61-300 
17:°850 
trace 
8-170 
6:972 
2°326 
20-404 
trace 
578 
1:344 
118-944 
No chemist could pass such waters as the samples obtained from 
Analyses of water taken from various quarries and wells, ete. 
In 1000 Parts. 
1:5389 
1601 
16990 
0:3/50 
-2550 
trace 
1167 
70996 
0332 
"2914 
trace 
0082 
70192 
16990 
* Foods, Composition and Analysis—A Wynter Blyth. 
