XVI. T. W. KEELE, 
and distinct from the others. Papers on these schemes 
were read before the Royal Society in December 1874, and 
in August, September, and October 1875. It was also 
thought that several schemes inquired into by the Com- 
missioners, had not received the consideration they deserved 
viz., the Warragamba scheme by Mr. Thomas Woore, R.N.; 
the Lower Nepean scheme by Mr. Macintosh, M.L.A.; two 
separate schemes from George’s River by the Hon. Thomas 
Holt, M.L.c., and Mr. J. Lucas, M.L.A. 
Enquiry by Mr. W. Clark, 1876:—To set the matter at 
rest, the Government decided to obtain, through the 
Agent General in England, the best expert advice obtain- 
able, and Mr. William Clark, M. Inst. c.E., was selected, and 
on his arrival in the Colony on November 29, 1876, he 
immediately entered upon the duty of advising the Govern- 
ment on the subject of the water supply to the city, and 
made a most careful investigation of all the schemes 
proposed, including those already mentioned, and several 
submitted subsequently to his arrival, viz., a scheme to 
obtain a supply from Port Hacking, supplemented by an 
idea which suggested itself to him, (Mr. Clark) viz., to 
construct a low dam on the Woronora just above the influ- 
ence of the tide, and thereby to force the water through a 
tunnel 25 miles in length, into the Port Hacking River; 
also a scheme from Erskine Valley, advocated by Drs. 
Fortescue and Spencer, and Mr. Grantly Fitzhardinge ; 
a scheme to obtain water by means of tube wells sunk in 
the sands of the Lachlan Swamp, originated by Mr. F. Bell, 
City Engineer, in 1872, and brought under his notice by 
Mr. P. Wilshire; anda proposal by Mr. Richard Sadleir, R.N. 
in 1852, to obtain a supply by connecting the Nepean and 
George’s Rivers with atunnel three miles long near Appin. 
On 15th May, 1877, Mr. Clark brought up his report 
recommending “‘ with great confidence ’’ the Upper Nepean 
