1868 The complete Practical Distiller

PROCESS OF MALTING.

63

This regulator midit be enclosed, so as to prevent ac- Between this and the worm is the stopcock G, which, in the beginning of the operation, communicates with the external air in the same manner as the cock of an air-pump ; but after the fire has been forcibly driven, the vapours may be seen issuing out of i ; then turning this cock, the communication between the worm and the ex- ternal air is closed, and the other between the same worm and the regulator must be opened, and the actions of both will commence. The ball H prevents the liquor driven by the external air from rising in E r E and in the alem- It is scarcely necessary to add, that the head, what- ever its form may be, should be well luted, in order to prevent the entrance of the external air. cidents. bic. For a long time, corn has supplied the trade with a kind of spirits, commonly called ^^ spirits of corn.'' Among the various kinds of corn used for the purpose of distillation, rye ranks the highest. Oats, Indian corn, and wheat are also used with success ; barley is almost always mixed, in a proportion which varies, with those vegetables. The best, and we may say the only, way of ascertain- ing the venal worth of corn is that of its specific gravity so that, all things being equal, that which under an equal measure weighs the most must be preferred for distilla- tion, as well as for every other use ; and the price varies, particularly, according to this quality. Its other quali* OF THE PROCESS OF MALTING, &c.