Dictionarium Polygraphicum. Containing. Polygraphick Dictionary. R. Realgar, Risalgal. S. Sandarach. Sandix. Shell silver. To dye stuff a straw colour. Sumach.

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.
Realgar, Risalgal.
A mineral, a kind of red arsenick, differing from the common arsenick, which is white, and from orpiment, which is yellow.

Sandarach is a white gum, oozing out of the trunk and thick branches of the great Juniper-tree, by incisions, made in the heats of the summer.
The little or common juniper yields very little sandarach; its fruit yields wines, oils, salts, spirits, and extracts of some re pute in physick. It is also a neceslary ingredient in varnish.
The best is in fine white tears, free of dust; some will have it, that the sandarach of the juniper is not the right, but only that of the oxycedron.

Sandix a kind of minium, or rather red masticote, made of ceruss calcin'd and rubefied, call'd also a factitious sandarach. It is but little us'd in painting, the real minium or vermilion, to which it is substituted, making a much better, brighter, and most durable colour.

Shell silver is made of the shreads of silver leaves or the leaves themselves; used in painting and silvering certain works: shell silver is prepar'd after the same manner as shell gold.

To dye stuff a straw colour. First dye the goods yellow, and throw half a pint of urine into the dye; put in the goods, and work them about, as long as you think convenient.

Sumach, a drug us'd in dying green, as also in the preparation of black Morocco and other leather.
It consists of the leaves and young branches of a shrub, not unlike the little service-tree; the leaves are longish, pointed, and hairy: the flowers grow in clusters, and are red like our roses. Its fruit is a kind of grape, of a very astringent quality; and its seed almost oval, and inclos'd within a capsula of the like figure.

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