Painters' colours, oils, and varnishes : a practical manual (1892)
Hurst, George H. (George Henry) · London : Charles Griffin & Company ; Philadelphia : J.B. Lippincott Co. · leaf 323
for use. FILTERING. Filtering, which follows precipitation, effects the separation of the pigment from the excess of water it contains. The simplest plan is to use a filter constructed of a sheet of calico loosely stretched over a skeleton framework of wood (see Fig. 32). The wet pigment from the… … Fig. 32.— Filter. is thorough ; the speed and completeness depends upon the character of the precipitate and the quality of the filtering cloth. If the precipitate is powdery and somewhat granular in structure, then the filtering goes on fairly rapidly, and the liquor that drains away is fairly…
Paint · Varnish and varnishing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
