Scientific amusements . Temperature reduced by contact with wire. principal function appears to be in some manner super-seded by electricity, gas is still too important to be putaside. It can easily be obtained by putting small frag-ments of coal into the bowl of a tobacco-pipe, closing the bowl with clay, and puttingit in the fire. Before longthe gas will issue from thestem of the pipe, and mayeither be lighted or col-lected in a bladder. Forthe use of the million,however, gas is preparedupon a very large scale,and is divided into threeprocesses — its forma-tion, purification, andits collecti
Scientific amusements . Temperature reduced by contact with wire. principal function appears to be in some manner super-seded by electricity, gas is still too important to be putaside. It can easily be obtained by putting small frag-ments of coal into the bowl of a tobacco-pipe, closing the bowl with clay, and puttingit in the fire. Before longthe gas will issue from thestem of the pipe, and mayeither be lighted or col-lected in a bladder. Forthe use of the million,however, gas is preparedupon a very large scale,and is divided into threeprocesses — its forma-tion, purification, andits collection for dis-tribution to first process is carried on by means of retorts shownin the illustration above. The first portion of the nextfigure is a section of a furnace, the other part shows twofurnaces from the front. The following is the em-. Retorts. COAL-GAS. 10/ ployed. The coal is put into retorts fitted to the furnace,so that they are surrounded by the flames, and terminatingin a horizontal tube called the hydraulic main, E, which isin its turn connected with a pit or opening for the recep-tion of the tar and ammoniacal liquor, etc., which con-
Size: 1575px × 1586px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade189, booksubjectscientificrecreations
