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.