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above quantity of superfine cloth, including the blueground. The quantities of vitriol and galls may be di-minished, and the time of boiling greatly ssiortened. Thepassing through weld liquor, after scowering with soap,is entirely unnecessary z though probably it may be of usewhere the scowering is not complied with; not howeverin virtue of the weld itself, but of the alcaline salt withwhich the decoction of it is generally prepared by thedyers, so that the weld liquor does no more than supplythe place of soap.

Both in this and the foregoing process, the liquor re*mains black after the dying of the cloth is finished, andcommunicates a dilute black, that is a grey colour, to asmuch fressi cloth as can be conveniently worked in it.

IV. Method of dying cloth grey .

The simple greys, which are all no other than ssiadesof black, are dyed nearly in the fame manner as the fullblacks } only by using a less proportion of the dying in-gredients, or continuing the cloth in the liquor for ashorter time.

A decoction of galls and solution of vitriol being pre-pared separately, a little of each of them may be put to-gether at once into a copper of water made scalding hot:the liquor becomes black; and cloth, dipt and workedin it, acquires a lighter or deeper grey according to thequantity of the decoction and solution employed : Byadding more of the liquors with the next parcel ofcloth, and thus proceeding successively, a series of ssiadesmay be obtained, from the lightest to the darkest grey.Or the cloth may be first boiled with a proper quantity ofgalls, and afterwards worked in the fame liquor, with theaddition of more and more vitriol according to the in-tended depth of colour. The liquor remaining after

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