A practical treatise on dying of woollen, cotton, and skein silk : the manufacturing of broadcloth and cassimere, including the most improved methods pursued in the west of England, in which the various manipulations are accurately delineated : also a correct description of sulphuring woollens and chemical bleaching of cottons (1823)
Partridge, William · New-York : H. Wallis & Co. for the author · leaf 293
The form of the retort in which this gas is made, must be given in order to make my instructions intelligible.. … Figure A, is a safety tube used to prevent any accident during the operation, and is also used to convey the sulphuric acid into the retort, after the other materials are put in, and the whole well luted down. B, is a distilling tube, through which the gas passes over into the receiver,. It is…
Dyes and dyeing · Woolen and worsted manufacture
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.