A Treatise on Calico Printing, Inflammable Substances.

A Treatise on Calico Printing, VOL. I-II
Printed for C. O'Brien, Bookseller, Islington, and fold by Bew, Paternoster-row: Richardson, Royal Exchange: Murray, Fleet-Street: And the Booksellers of Manchester, Glasgow, Dublin, &c.
1792These are Sulphurs, Oils, Resins, Bitumens, Spirits of Wine, Charcoal.

All bodies, probably contain more or less phlogiston, but these are deemed ihflammable in which it abounds, but with which, at the same time, it is not so intimately blended, but that it may be driven out from them, under certain circumstances, by the intervention or rushing in of the air.

Sulphur (as said before) isthe vitriolic acid combined with much phlogiston. Oils are mineral, vegetable, or animal, and are, in general, unctuous bodies, that burn and consume with flame and smoke, containing phlogiston; which by means of an acid is united with phlegm or water, together with a certain portion of earth: Nitrous and vitriolic acid, act on oils according to the portion of phlegm which they contain.

Charcoal, or any charred matter, is what is left from the burning of any vegetable or animal matter, that has an oil united to much earth; this substance is unalterable by any other body than fire; hence acids ever so highly concentrated have no effect on it.

Resins will be spoken of in the next section.