Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 3
To make tan leather black, it is reeomuiended that it be rubbed tirst with a 10 per cent solution of tannic acid which should be permitted to dry thoroughly. Afterwards a 10 per cent solution of iron sulphate should be applied and in turn y be permitted to dry. Both chemicals are pro- <^ curable at… … Pushes, Bells, \^ \ eluding Engines, inaicators,iiat- / .^y -^ \ ^^ \ Dynamos, Ac- teries, Hand /^^ / ^^^^ \ ^,p^\ cumulators, Dynamos, ^^W offices, V Switches, &c. / /^y 88' ^^& \ Fittings, Price />V ^^^^^ VICTORIA ST., \^ \ &c. J^^ / LONDON, E.G. \ "AN OT / Show Rooms. &c., \ ^^^^ / 30, CANNON…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
