1863 The manufacture of liquors, wines, and cordials

REMOVAL OF GRAIN OIL BY FILTRATION.

Ill

layers, the better to enable the fluid to pass off This process gives to the spirit a luscious taste, a fine bead, and is decidedly the most economi- cal mode that is in use for the manufacture of low rapidly.

proof spirits.

REMOVAL OF GRAIN OIL BY FILTRATION.

Arranging the Stands or Rectifiers. The material used for stands or filters may be adapted to all circumstances, thus : water casks, pipes, barrels, dec., will answer as well as the regular filter. The only objection to the barrels is the loss of the liquid and labor consequent upon the frequent filtrations neces- sary for the effectual removal of the grain oil, whereas a cistern of sufficient dimensions would obviate this difficulty. The greater the surface presented to the action of the fluid, the greater the benefit. Usually, in all large establishments in America arid Europe, the stands vary in size, say from twelve to thirty feet in height, and six to twelve feet in diameter. Again, others give the preference to filters six feet high ; a series of these are arranged from the fourth or fifth story to the basement. These are packed alternately with charcoal and bone black ; the two last stands being packed with charcoal alone, which removes the