. The cyclopaedia; or, Universal dictionary of arts, sciences, and literature. Encyclopedias and dictionaries. CRIMSON. t<: frcm may thus be tolerably i - t,yet omparablc in this refpect with thofe obtained cochineal or madder. A bloom is fomel n to Ider colours by palling them through a deco&ion of I, but this flight tinge foon fades and p ifhes. Mr. Guhliche gives a procefs, by which he pretends that fine and more permanent colours are obtained than by thofe flight tinge cf , when white filk is to be dyed crimfon. When the filk is well cleaned from the foap b
. The cyclopaedia; or, Universal dictionary of arts, sciences, and literature. Encyclopedias and dictionaries. CRIMSON. t<: frcm may thus be tolerably i - t,yet omparablc in this refpect with thofe obtained cochineal or madder. A bloom is fomel n to Ider colours by palling them through a deco&ion of I, but this flight tinge foon fades and p ifhes. Mr. Guhliche gives a procefs, by which he pretends that fine and more permanent colours are obtained than by thofe flight tinge cf , when white filk is to be dyed crimfon. When the filk is well cleaned from the foap by warning, it is foaked in a ftrong folution of alum, in which it is generally li ft all night, and next day is wrung, wafhed, and twice beetled at the river. The bath is prepared as follows : Into the dyeing veffel,. water or vegetable acid is to be poured, repeated till all the colouring matter is extracted, when the wood will be found to be black. All thefe liquors are then to be mixed together for ufe. The fluff having been prepared with a flight galling of fumac, or white galls, is (lightly alumed. After rinfing, it is entered wet into a bath prepared as follows : Some of the acid folution of Brazil is diluted with water proportionate to the quantity of fluff, or the (hade of colour to be g When this is fo hot that the hand will juft bear it, folution of tin is poured in til! it is of a five colour : it is then ftirred and the fluff entered. In half an hour it is taken out and -allied. The remainder of the bath may be ufed for â ry pou: When this is diffqlved, an equal weight of the folution of tin i; added ; I dients are all well ftirred, and the bath tilled up with cold water. The proportion is gener about eight or ten quarts to every pound oi filk. In this the i . urked till it appears quite uniform in colour ; the fire is then increafed, and the bath made to boil two h the filk from time to time. T. e- , and the filk left in the bath a few hours longer. It is t
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Keywords: ., bookcentury1800, bookdecade1810, booksubjectencyclo, bookyear1819
