ECONOMIC EFFECT OF SANITARY WORKS. 129 
of these would be infirm from age: by making this deduc- 
tion we still have 2,121 persons in the full vigour of life who 
have been saved. Then we have— 
_ 3,926 funerals etc. saved at £5 each ... £19,630 
3,926 xX 25 = 93,150 cases of sickness 
prevented at £1 each eas bs 93,150 
2,121 persons, value of labour at £19 10s. 
for 10 years ... =~ Asi Say petelbon a5) 
Total saving in thirty years ... £531,375 
In this case £267,665 had been expended on all the public 
works, and they had effected a saving equal to £531,375, 
so that in a short space of twenty years a sum exceeding 
by 95% the total expenditure for works executed and the 
purchase of freehold property has resulted from the prose- 
cution of sanitary measures.”’ 
In this calculation it will be noticed that Mr. Baldwin 
Latham takes no notice of the economic result arising from 
the increased longevity of the community due to improved 
Sanitary conditions, which will be referred to later on. 
Now if we apply Mr. Balwin Latham’s process to the 
case of the City of Sydney for a period of fifteen years 
since 1883, allowing for the cost of funerals £7 each instead 
of £5, to meet local conditions, and in the matter of saving 
by reason of the escape of sickness, thirty cases for every 
life saved instead of twenty-five, and £2 as being a moder- 
ate value of the results in each case, and accepting the 
mean value of labour for men and women over and above 
maintenances as extracted from the Statistical Register 
as being £32 10s. for each case, we arrive at the following: 
Average death rate 1871 to 1885 21°02 per thousand 
9 3 » 1886 to 1900 15°38 és 
» saving per annum ee 3°64 
», population, 1886 to 1900 411°762 
