Dictionarium polygraphicum. To dye stuffs, &c. a purple.

Dictionarium Polygraphicum:
Or, The Whole Body of Arts Regularly Digested.
Vol II.
London: Printed for C. Hitch and C. Davis in Pater-noster Row, and S. Austen in St. Paul's Church Yard. MDCCXXXV.
1735
To dye stuffs, &c. a purple.
Allow a sufficient quantity of fair water to every pound of stuff, one pound of tartar, and two ounces of alum; in which boil the cloth for an hour; then take it out, cool and rinse it; after this warm some clean water, into which put in three ounces of Brasil wood; boil it half an hour, and then work the stuffs in it, till it becomes as red as desired: upon which, take them out, and put into the dye two ounces of pot-ashes; stir it well about, and put in the red stuff once more; roll it off and on the roller, that it do not spot; then cool, and rinse it out.

Another Purple.
First blue the ware in the suds, which has been wrought 'till it turn to a sort of a half green, and then boil'd for three quarters of an hour with twelve ounces of aqua fortis, half a pound of sal-armoniac, two pound of white-wine tartar, two pound of roach alum, and afterwards rinsed out.
To finish it; proportion your suds to thirteen pound of goods, and take ten ounces of cochineal; and if you think that quantity will make it too red, you may correct it with an ounce of pot-ashes, and an ounce and half of lac.
If the aqua fortis be tempered, or the work perform'd in a tin kettle, or less sal-armoniac us'd, the colour will incline more to a blue.

To dye stuffs of a lasting purple dye.
The stuff, when white, ought to be very clean and free from all spots and stains, that the stuff may have the better lustre when dyed.
The blue. The stuff must first be dyed to the depth of a sky-colour with woad or indigo, and then dried.
The browning or deepening.
Boil half a pound of Brasil, and divide it into four parts, as is done in the violet brown dye, and is to be dyed time after time in the same manner: to the first part of the Brasil, add one drachm of salt-petre, and one drachm of sal-armoniac powder; to the second, add a quarter of an ounce of powdered galls, and half an ounce of Paris red, which is a sort of bastard sandarach; to the third a quarter of an ounce of galls, and a quarter of an ounce of calcin'd tartar, and of alum and salt-petre, each a drachm.
The fourth time, a quarter of an ounce of galls powdered, as much turmerick, and a quart of sharp lye, and you will have a beautiful colour.

To dye silk a slight sort of purple.
Clap the silk into the slighter red dye; but increase the quantity ot pot-ashes, to turn it to purple, then rinse and dry it.

To dye thread of a purple colour.
First alum the thread with three pound of alum, half a pound of tartar, and two ounces of Brasil, dry it, and draw it through the woad or indigo dye, then rinse it clean, and dry it again; then to brown or deepen it, take twelve ounces of Brasil, being first boiled, which liquor divide into three parts, to be us'd at three times.
To the first add half an ounce of Paris red (a sort of sandarach) one drachm of mastich, and a quarter of an ounce of calcin'd tartar; always drying the thread, after you have us'd every one of the parts of the liquor. The second time add half an ounce of turmerick, two drachms of cinnabar, and half an ounce of gum Arabick. The third time, when the thread becomes reddish, add a quart of sharp lye, and by this means the thread will be dyed of a lasting colour.