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For a hundred pounds of blue cloth j ten pounds oflogwood chips, and the fame quantity of Aleppo galls inpowder, are tied up together in a bag, and boiled in amiddling copper, with a suitable quantity of water, fortwelve hours.

One third of this decoction is taken out into anothercopper, and two pounds of powdered verdegris added toit. In this mixture, kept gently boiling, or rather onlyscalding hot, the cloth is dipt, and turned without cease -ing, for two hours j after which it is taken out and aired.

Another third of the decoction is laded out into thesame copper, eight pounds of green vitriol added, and thesire slackened about half an hour. The vitriol being nowall dissolved, the cloth is put in and worked for an hour,and then taken out and aired again.

The remaining third of the decoction in the first cop-per is then put to the other two in the second, the bagof galls and logwood being well pressed out. Fifteen ortwenty pounds of sumach are now added ; and as soon asthe copper begins to boil, two pounds more of vitriol arethrown in, with some cold water to slacken the heat.The cloth is kept. in for an hour, then taken out andaired, dipt a second time, and kept turning for an hourlonger.

The cloth, now compleady dyed,, is waihed in a river, ,and scowered in the fulling mill till the water comesfrom it colourless. It is then passed through a copper ofweld or woold, prepared as for dying yellow, which is.supposed to soften the cloth and confirm the colour.

This process affords a. very fine black, but it is tooexpensive to be followed by our dyers, the fire, and.manual labour of the black dye as here described amountingto more, as I am informed by a person conversant in thisbusiness, than the dyer is paid for the whole dye of the

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