Scientific American 18, 14.1.1854
Stephen Garrett, of Surrey, Eng., patentee. The skins or hides are secured on a frame, which is made to be raised and lowered in the tan vats. This mechanical action is kept up until the hides or skins are fully tanned.
Coloriasto on väriaiheisten tekstien (ja kuvien) verkkoarkisto
(Archive for colour themed articles and images)
INDEX: coloriasto.net
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