Materia photographica : a treatise on the manufacture, properties, and uses of the substances employed in photography (1891)
Leaper, Clement J · London : Iliffe · leaf 16
nd intended to receive liquids for distillation. Tubulated retorts are far mora convenient than plain retorts, but, of course, more expensive. For many purposes a flask, or even an ordinary tin can fitted with a cork and a bent glass tube, answers instead of a retort. Liebig's Condenser consists… … Retort Stand.— This is a vertical iron rod, mounted on a heavy metal foot, and provided with rings which slide up and down, and can be clamped in any desired position by thumb- screws. The rings are employed for holding basins, retorts, etc., which are being heated.
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
