United States or Russia ? Vote for the TOP Country of the Week !
The apparatus shown in Figs. 1 and 2 is based upon this observation. The wash enters, through the hopper, D, and the valve, z, a long boiler, B, which is heated by the furnace, F, through the intermedium of a waterbath, w. An agitator, E, moves the mass slowly to the other extremity of the boiler, from whence it makes its exit in the form of dust.
Word Of The Day