Note 2 — Chapter I · INTRODUCTORY.
Reading edition
Cochineal was at first supposed to be a grain, which name it still retains by way of eminence among dyers. Ure.
[3] For the cultivation of Woad in England, see Parish's paper in vol. xii. of the Bath Society's Report, or Tilloch's Mag. vol. xxxviii.
[4] What are called iron moulds in cotton, linen, &c. are, it is well known, nothing but the marks of a buff colour, usually left by ink and other matters which contain iron: acids, of course, dissolve, and discharge these buff colours; the oxalic acid does so without decomposing the cloth.
[5] "Acetate of Alumina is now most frequently made for the Calico-Printers by dissolving alum in a solution of crude acetate of lime, (pyrolignite); a gallon of the acetate, of specific gravity, 1.050 or 1.060, being used with two pounds and three-quarters of alum. A sulphate of lime is formed, which precipitates, while an acetate of alumina mixed with some alum floats above. The acetate of alumina employed as a mordant for chintz, is still commonly made by the mutual decomposition of alum and acetate of lead."—Ure's Berthollet, vol. ii. p. 331.
[6] Berthollet.