062 Transactions.—Miscellaneous. 
discharged with a lot of sand and mineral matter, which entangles it and 
causes it to sink to the bottom and putrify. That there is no sewage 
matter which of itself would not float, and could not form a deposit were it 
not'entangled and kept down by some heavier substance. The main sewers 
collect both the house sewage and also the street washings, and when 
mixed together form putrid mud at the outlets, which is very offensive. 
* In a report, attached, ‘ of the Committee appointed by the Sydney City 
‘and Suburban Sewage and Health Board, 16th July, 1875, to examine and 
report upon the outlets, of the city sewers, discharging into the Harbour,’ 
it is stated, that silt-pits are used to intercept heavy particles before dis- 
charge at the outlet; that one constructed at the Market Wharf outfall has 
stopped the silting up of the outlet. It contains, when full, 100 tons, and 
fills up about every sixmonths. The area drained by it being about eleven 
and three-quarter acres. 
* The evidence of Dr. Alleyne, taken after the reading of the above- 
mentioned report, shows clearly how offensive is the matter discharged in 
spite of these silt pits. At Fort Macquarrie the rocky bottom is covered 
with a film some inches thick, which has rendered reclaimation necessary. 
* A letter from Captain Nares is appended, dated 19th November, 1874, 
giving a bad account of the state of the anchorage in Farm Cove, and stating 
that the moorings there have already had to be moved in consequence of 
the unhealthiness of the previous position, due to the discharge from the 
sewers. 
. ** I myself found on arrival at Sydney, that the smell was so abominable 
as to render it impossible to remain in the berth-room of the Newcastle 
steamer, whilethe port-hole was open ; and I was forced to leave the vessel's 
cabin and walk about in the town until the hotels opened. 
** Method by which the Pollution of the Shores can be lessened. 
* Iron pipes are to be laid down from the mouths of certain sewers to 
convey the ordinary dry weather flow into deeper water, at a distance of 
about 120 feet in one case from the present outlet. The description by 
Mr. Moriarty of his plan for this work is appended, in which he condemns 
the sewage being allowed to flow into the Harbour at all. 
“ Decision of the Board in Sydney to Divert the Sewage from the Harbour. 
** The sewage is to be discharged for the most part by gravitation through 
a tunnel to the ocean, or by tunnel, pipes, and conduits, to some tract of 
land suitable for sewage farming. 
** In addition to the subject you directed my attention to more particu- 
larly, I append remarks on the pollution of the water supply, owing to 
water-closets being directly connected with the mains. This is a great 
source of sickness. An investigation of this subject was instituted, and 
