XXVI1. ABSTRACT OF PROCEEDINGS. 
15 Eaton Place, S.W. 29 June, 1903. 
Dear Sir,—I have received your letter of the 21st May, and I desire 
through you to express my warmest thanks to the Royal Society of New 
South Wales for the honour they have kindly conferred on me in electing 
me to be an Honorary Member of the Society. With thanks to yourself 
for your letter, 
I remain, yours faithfully, 
KELVIN. 
Gro. H. Knisss, Esq. 
The discussion upon Mr. J. H. MAIDEN’s paper ‘* The 
sand-drift problem in New South Wales,’’ postponed from 
the previous meeting, was continued, the following gentle- 
men taking part—Messrs. C. A. Benbow, C. J. McMaster, 
W. A. Dixon, and R. Htheridge. 
THE FOLLOWING PAPERS WERE READ: 
1. ‘‘The Economic Effects of Sanitary Works,”’ by J. HAYDON 
CARDEW, Assoc. M. Inst. C.E. 
The author dealt with the economic effects and general 
benefits of sanitary works on large cities, instancing the 
works carried out in thirteen large cities of the world. 
The city of Sydney, he stated, had led the way in sanitary 
works in Australia, and, if viewed from the standpoint of 
sanitary results alone, would serve as an admirable object 
lesson to the rest of the Commonwealth. The author held 
that the elements of sanitary science should be taught in 
the public schools. The principal object of the paper was 
to give municipal and health authorities some basis to work 
upon in devising sanitary services and forecasting their 
economic effects. The death-rate of the cities aforesaid, 
which embraced Sydney, Melbourne, Brisbane, and Adelaide, 
was analysed and illustrated by large diagrams, going back 
to the very earliest records, and in the case of London the 
effects of the plague and its gradual elimination with 
the advance of sanitary knowledge, was very clearly and 
graphically illustrated. The history of the various com- 
missions that were appointed to enquire into the health of 
