A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . arge quantity of ^^^ tannic and gallic acid; they grow ina very peculiar manner, and becomecuriously curled as they arrive to per-fection. The plant is a native ofAmerica, between the tropics. SnMACn is a plant belonging to thegenus Rhus; several of the specieshave astringent properties ; lihus coi-nus and Rhus coriaria are much usedin tanning; the bark of the latter issaid to be the only ingredient used inTurkey for the purpose of convertinggelatin int
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . arge quantity of ^^^ tannic and gallic acid; they grow ina very peculiar manner, and becomecuriously curled as they arrive to per-fection. The plant is a native ofAmerica, between the tropics. SnMACn is a plant belonging to thegenus Rhus; several of the specieshave astringent properties ; lihus coi-nus and Rhus coriaria are much usedin tanning; the bark of the latter issaid to be the only ingredient used inTurkey for the purpose of convertinggelatin into leather. That used in this country is ground to a fine powder, and is extensively applied to the production of brightleather, both l)y tanners and curriers. Many other vegetable products have been from time to time proposed, and to someextent adopted for the same end, l)ut thev need not l)c enumerated. LEATHER, CURRYING OF. The curricis .-hop has no resemblance to the premisesof the tanner, the tools and manipulations being quite different. Within the last twenty or thirty year,^, many tanners have added the currying business. 704 LEATHER CURRYING OF. to their establishments, and many curriers have likewise commenced tanning ; but in eachcase, an extension of premises is necessary, and the two departments are still advantages derivable from this arrangement are twofold,—first, a saving of time iseffected, for as the tanned leather is sold by weight, it is required to be well dried belbrebeing disposed of to the currier—an operation which is not needed where the tanner carrieson the currying also; and secondly, by the curriers art, the skins can be reduced to a com-paratively uiiitorm thickness previous to their being tanned, thus saving ti)»e and bark,(used for tanning,] and insuring a more equal distribution of tannin through the substanceof the skin. In the following description, the business of currying will be considered aspractised at the present time :
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
