Robinson, H. P. (Henry Peach), 1830-1901, author, Abney, William de Wiveleslie, Sir, 1843-1920, author, Piper & Carter, publisher · London : Piper & Carter · leaf 33
are bent to the form shown. When the kaolin has subsided to the bottom, air is forced by the mouth into the bottle through C, the liquid rises over the bend of the tube D, and syphons off to the level of the bottom of the tube inserted into the liquid, provided the end of D, outside the bottle,… … Fig. 5. and a gentle bend is made without choking the bore, which would be the case were a point of a flame used. Another method of purifying the solution is by adding a few drops of hydrochloric (muriatic) acid to it. Chloride of silver is formed, and when well shaken up, carries down with it most…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
