526 KANSAS CITY REVIEW OF SCIENCE. 
laid off in districts, the cost will not greatly exceed $1.50 per 100 square feet, or 
$653.40 per acre. We must therefore revise the calculations previously made, 
and in order to make sure that we shall get a minimum estimate, we will assume 
that the whole of the 2,600 acres remaining to be sewered, some of which of 
course is included in existing districts, shall be completed at the above estimated 
cost of $653.40 per acre. The revised estimate will then stand thus: 
Cost of 307 acres sewered December 31, 1882 .... $ 314,914 
Cost of 2,600 acres to be sewered, $653.40 1,698,840 
Total. $2,013,754 
It, therefore, appears probable -that the cost of the present system of sewers, 
if extended to the whole area of the city, will be between $2,000,000 and $3,- 
000,000. This brings us to the inquiry as to what will be the cost if we should 
adopt the separate system for these portions of the city yet unprovided with 
sewers. The cost in Leavenworth is stated to be, as near as possible fifty cents 
per 100 square feet, or $217,80 per acre. If we assume these figures as correct, 
we have the following estimate : 
Cost of 307 acres sewered December 31, 1882 . . . .$ 314,914 
Work done during 1883, say 100 acres at $700 .... 70,000 
Cost of 2,500 acres to be sewered at $217.80 544,500 
Cost of storm-water sewers to be built hereafter. . . . 150,000 
Total $1,079,414 
So we may say, in round numbers, that it is yet possible to save a million of 
dollars to the city, by adopting the separate system of sewerage for the portions 
not yet undertaken. 
It will be noticed that in the foregoing estimate the sum of $150,000 is 
allowed for storm-water sewers, to be built at points where the accumulation 
from the gutters proves to be a nuisance. I do not believe that there will be 
many such points. In Memphis there are said to be none at all; but even if we 
have to double or treble that estimate, we shall still realize a notable economy 
over the cost of completing the present system. 
Let us even assume the very worst possible supposition, one which is nearly 
impossible, that the storm-water shall prove in time such a nuisance, over all 
parts of the city, that we shall be led to underlay every portion of its site with 
another set of sewers for storm-water alone. It will certainly be admitted that 
this contingency is remote, that it will not occur for many years, and I will ask 
whether it is not better, even in that event, to construct now a set of cheap 
sewers for sanitary objects alone, even if we have hereafter to encounter the full 
cost of another set to provide for storm-water alone, which, be it remembered, 
may wet the feet of passengers, render crossings impracticable for a short time, 
or even occasionally tear up gutters, or flood a cellar; but which cannot endanger 
health or life, as we are led to believe by sanitarians the combined sewers do. 
The case then stands thus : Memphis has been the first city in this country 
