Snelling, Henry Hunt, 1816-1897 · [New York : W.B. Smith] · leaf 367
g frame bythe check Jc. The frame slides along therod I, Z, and can be fixed at the properfocus by means of the step m. n is the gut-ta percba washing tray, o is an opening inthe bottom of the camera near the door,to admit the well p, and which is closed,when the well is removed, by the door q.The… … 1. the sliding door that supports the lens h,there is, within the camera, a small hingedtable r, supported by a bracket 5. .Thesetwo tables serve to support the bottles that contain the solutions necessary to be ap-plied to the glass plate after its exposureto the lens. Figs. 3 and 4 represent two…
Photography · Art and photography
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![An illustration from One thousand processes in manufactures and experiments in chemistry / [Colin Mackenzie]. (1825)](https://img.insideoutlibrary.com/img/200/wellcome-wellcome_b29307867-164-1.webp)
