Recent improvements in arts, manufactures, and mines : being a supplement to his Dictionary (1844)
Ure, Andrew, 1778-1857, Ure, Andrew, 1778-1857. Dictionary of arts, manufactures, and mines · London : Printed for Longman, Brown, Green, and Longmans · leaf 87
with the cotton imbued with acid, and afterwards dried by friction with cotton and pumice ; avoiding to touch the plate with the fingers, or with the part of the cotton held in them, or to breathe upon the plate, since spots would thereby be produced. After cleaning with cotton alone, the plate is… … metals as the plates, also shown in fig. 26., a small handle and a box of small nails or tacks, and a phial of iodine. After fixing, by the metallic bands and the small nails, the plate upon the thin board, with the silver uppermost, several particles of iodine are then to be spread in the dish d,…
Industrial arts · Technology
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
