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ee 
Nt 
4 
134 . J. H. CARDEW.. 
years on a 4 basis equal to £23,778,150. In this method 
the values of the benefits due to increased longevity and 
reduction of the death rate are combined, and there.is no 
doubt that the wider view by Capt. Douglas Galton of the 
accrued benefits of sanitation is the correct one. 
A comparative statement of the economic effect for 
Sydney by the three different methods quoted is as follows: 
1. By Baldwin Latham . &10,587,320 
2. By Captain Galton ... .. £23,776,150 
3. By the author one w. £©12,526,151 
But whatever may be the actual money value of the im- 
proved conditions of life due to sanitary works it will be 
quite safe to adopt the lowest computation by Baldwin 
Latham which gives a 10 years purchase of the works. 
The local authorities of any town contemplating sanitary 
works may apply these results to their own case by fore- 
casting :— 
1. The number of lives saved per 1,000 by probable reduc- 
tion of death rate, say in ten years after completion of 
works, which by adopting the mean saving of the thirteen 
cases illustrated in the appendix ‘‘A’’ may be assumed to 
be 9°05. 
2. Forecasting the mean population for same period. 
3. Calculating with 1 and 2 the total saving of life for 
ten years. 
4, Calculating money saved by Baldwin Latham’s system 
which would be about £135 per head of lives saved. 
5. Adopting the money thus saved as the capital expen- 
diture justified by the results to be obtained. oh 
In this way they can compile an approximate palanee 
sheet shewing the Lage: they may fines expect from 
the expenditure. . ; ’ | 
