SANITARY PRIVY. vali 
The evaporation out of doors will vary greatly with the wind, 
humidity, and temperature in different regions, and the greater the 
evaporation the thicker the material in the liquefying tank becomes. 
Should such thickening occur, the odor will increase, and it will be 
necessary to add water to the liquefying tank. In order to prevent 
such thickening, it may be found necessary in some instances to add 
water from time to time. Just how often and how much water should 
be added, under adverse conditions, has not yet been determined, 
but, so far as can be foreseen at present, probably a bucketfull (about 
2 gallons) added once a week will be sufficient for a single barrel used 
by a family of 3 or 4 adults. 
Experiments have conclusively demonstrated that the principle 
of the L. R. S. privy is good. The details regarding the addition 
of water must be determined experimentally in different localities. 
Any intelligent farmer should be able to determine this point for his 
own locality." 
If this type of privy is managed fairly intelligently, the indica- 
tions are that the liiquefying tank will rarely need cleaning, probably 
not oftener than once in several years. When cleaning does become 
necessary, this can be done in several ways: The barrel may be > 
taken out, and its contents burned; or the contents may be pumped 
or dipped out, and burned; or a considerable amount (several bar- 
relfils) of water can be poured gradually into the liquefying tank, | 
and the sludge thoroughly stirred until it runs over into the effluent 
tank. 
In the experimental L. R. S. privy the only paper used has been 
the regular toilet paper. This has liquefied with sufficient prompt- 
ness. If heavier paper (such as newspaper) were used, this 
would break up more slowly, and allowance for it might have to 
be made by increasing the capacity of the tank. It is well to bear 
in mind that the ink on newspaper is likely to irritate the skin. 
Corncobs and similar objects would certainly interfere materially 
with the successful working of any apparatus of this kind. 
DIRECTIONS FOR BUILDING A SANITARY PRIVY. 
There are many different ways that a privy building can be con- 
structed. The details of construction are here appended for only 
one of the many different styles. 
In order to put the construction of a sanitary privy for the home 
within the carpentering abilities of boys, a practical carpenter has 
been requested to construct models to conform to the general ideas 
expressed in this article and to furnish estimates of the amount of 
1Tt should be understood that the L. R. S. privy is described simply as a type, and 
may be modified to suit varying conditions. 
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