Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 189
Filtering: — Water. 177 the earliest modifications of the simple porous, consequently the water has to carbon block. Figs. 156, 157 show- enter at the edges and follow the course respectively the forms adopted for down- indicated by the arrows, before it can ward and upward filtration. In the reach… … boiling water, after which the surface can be scrubbed. former, the stoneware receptacle is The 'Army Medical Report' says of divided into 2 parts by a diaphragm filters emiiloying carbon in porous blocks upon which there is fi.xed, by a por- that, " These are powerful filters at first, celain…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
