the number of Smiths. It is understood that it consists of a series of heavy rollers resembling those by which iron plates are rolled, and also of a pair of gigantic grindstones of novel pattern and enormous power, the whole being set in motion by a 12-horse-power engine. Its method of operation is at once simple and effective. The operator takes a Smith of any size, and, adjusting the gear of the rollers to the exact width to which it is desired to roll the Smith, gently inserts his head between the rollers. The machine is then set in motion, and in the brief space of fifty-eight seconds the Smith is rolled to any desirable degree of thinness. If a Smith is to be crushed, he is placed in a hopper communicating with the grindstones, and after a rapid trituration, varying from two minutes to five minutes, according to the size and toughness of the Smith, he is reduced to a fine and evenly ground powder, in which such foreign substances as buttons or shirt-studs can be detected only by the most delicate chemical tests. The inventor, so it is said, claims that by a very simple mechanical attachment the machine can be made to roll or crush Smythes and Schmidts with equal efficiency, and he is confident that the general principle underlying his invention can be applied to Brown-crushing or Robinson-rolling machines.
Now we may fully appreciate the ingenuity displayed in the conception of the Smith roller and crusher, and the skill with which that conception has been embodied in iron and grind-stones. A grave objection, however, can be
