XXXV.

_EARTH-CLOSETS._

Deodorization and preservation of excrementitious matter--The earth-closet--Waring's pamphlet--The agricultural argument--Necessity of returning to the soil the elements taken from it--Earth-closet based on power of clay and inorganic matter to absorb and retain odors and fertilizing matter--Its construction--Mode of use--The ordinary privy--The commode or portable house-privy--Especial directions: things to be observed--Repeated use of earth--Other advantages--Sick-rooms--House-labor--Cleanliness--Economy.