MALT-BRUISER, or BRUISING-MILL. It has been found by repeated experiments, that bruising malt is a more advantageous method than the old one of grinding and flouring. By bruising, there is not only less waste, but the malt is also better fitted for giving out all its virtues. It has lately, therefore, become a practice to squeeze malt between rollers, by means of a proper apparatus, of which various constructions have been invented. As the best contrivance of this sort is said to be the bruising-mill of Mr Winlaw, we have given a figure of it on Plate CCLXXXII. where AAAA is the frame; B, the large cylinder or roller; C, the small one; D, the hopper; E, the shoe; F, the frame that supports the hopper; G, a fly-wheel; H, the windlass. To use this engine, it is directed to screw the large roller up to the small one, and not to feed two fast from the shoe, which is regulated by pins that have strings fixed to them. It is evident, that when two smooth surfaces are opposed to each other at a distance which can be regulated at pleasure, neither grain nor any other similar substance can pass between them without being bruised. This being the principle on which the bruising-mill acts, the mealy substance, which is the essential part of malt, is entirely removed from the skin or husk which contains it, and all the virtues of the malt are with ease extracted by the water in a manner superior to what is effected when the grain is only cut by grinding. The operation is at the same time so expeditiously performed, that two men can with ease bruise a bushel of malt in a minute. By the same engine may also be bruised oats and beans for horses. A great part of the corn given these animals, it is well known, is swallowed whole, and often passes through them in the same state; in which case, they cannot receive any nourishment from the grains that are unbroken: but when bruised in this engine, it eases mastication; and every grain being prepared for nutrition, a much less quantity will of course be found to be sufficient. For bruising beans, the two regulating screws must be unscrewed a little; and the fly-wheel requires to be then set in motion with the hand, on account that the rollers are then a little space apart, and will not turn each other before the beans come between them.