THE WATER OF SYDNEY HARBOUR. 47 
two bridges were arengeatcnd the purest and the foulest which i 
have met with in this portion of the harbour. That taken from 
mia asa 
tolerable drinking water; that taken from the Pyrmont Bridge, 
though collected in mid-stream, ls even more impure than the 
water collected at the embankment in Blackwattle Cove, in the 
neighbourhood of the polluted ste sien described. 
onclusion.—I am not aware whether any similar examination 
of the water of the harbour has been previously made ; nor do I 
pretend to know what degree of contamination in the water is 
likely to be injurious to those who live in close proximity to its 
ores. ether the work above described has any interest or 
value beyond that of a private exercise in the use of an attractive 
ei of analysis is a question which must be left for others to 
ecide 
TABULAR VIEW OF RESULTS. 
(engre per "titre. ) 
. Albuminoid. 
May Sydney drinking water (mean of three) . we 067 
” ean 3a brag + St. Paul’s College... ie 03 
May 22. pray ype ‘3 hrs. ebb) ag. i 72 
39 > ” ” : < 
June 2 re A » (2 hrs before h.-w. -) 24 ‘ll 
wb (about w) B.. 88 
May 27. Giebe Point (1 br, before ‘es -w.) . IS eg 5 28 
24. Wharf, Erskine-street (4 hr. flood 66 ale 
June 9. (} hr. before h.-w.) 34 "22 
ranean Foul Cr eek, Blackwattle Stig sa ee oo 61 
» 7 Glebe Island Bridge (5f ebb)... Sper BE 26 
» 12 ,, a Mak BADE cuie hc) 
» 47. (34 before h.-w.)  .... ‘16 06 
9 me han Bridge (24 b. h.-w.) ... te 8B 26 
rede V8 ‘s » (2b. h-w.) aK ORs “2 
» 17, 0 » (3b. h.-w.) Se 
