1860 A Treatise on the Manufacture , Imitation, Adulteration and Reduction of Foreign Wines, Brandies, .

180

VINEGAR.

may afterwards pass off through a hole of two and a half inches diameter, in the upper1nost cover, in which a funnel is placed for the supply of liquor, as it is wanted to keep up the percolation. "The te1nperature of the fermenting com– partment is ascertained by means of a ther– mometer, whose bulb is inserted in a hole through its side, and fastened by a perforated cork. The liquor collected in the under vessel runs off by a siphon, inserted near its bottom, the leg of which turns up to nearly the level of the ventilating air-pipes, before it is bent outward and downward. Thus the liquor will begin to flow out of the under compart– ment only when it stands in it a little below the sieve cover, and then it will run slowly off at the inclined mouth of the siphon, at a level of about three inches below the lower end of the glass tubes. There is a vessel placed below, upon the ground, to receive it. The tub itself is supported upon a wooden fraine,