Stone′ware Fil′ter.
A sim- [2404] ple filter consists mainly of two stoneware vessels, the one being placed on the other, and the lower on a stand or table. The water is placed in the vessel a, and thence percolates through the sponge b, which detains large impurities, thence through a perforated earthenware plate, 6 inches of charcoal, and a second plate, reaching the lower vessel, whence it is drawn as required, by means of the faucet.Stone-worker's tools. |