Note 1 — THE PROCESS OF HAT-MAKING EXPLAINED, WITH PREFATORY REMARKS, &c. &c.
Reading edition
The liquor, which is always kept up to scalding heat, is nothing more than clean soft water, with a wine glass of vitriol, and a small quantity of beer dregs thrown in. The first is to shrink the body of the Hat in working; the other to destroy the pernicious effect of the vitriol.