We now arrive at the bakehouse, the principal theatre of Mr. Grant's ingenuity. We are in a large room on the ground floor--it may be one hundred and twenty feet in length, lofty, and well lighted, the centre portions of which are occupied by machinery of no very complex aspect; and it may be a dozen men and boys slip-shod and bare-armed, are moving here and there among it. There is no bustle, no confusion; and notwithstanding the unceasing movements of the machinery, very little noise. We are at once sensible that we are witnessing a scene of well-organized industry; but we can hardly persuade ourselves that we see the whole staff employed in converting flour into biscuit at the rate of one hundred sacks per day. In the midst of the general activity, the eye is caught by the figure of one man whose attitude of repose contrasts strangely with the movements going on all round him. He seems to have nothing to do but to lean listlessly with one or both of his elbows on the top of a sort of box or chest, much resembling an ordinary stable corn-bin, which stands against the wall at the left of the entrance; yet that occupation will not account for the mealy state of his bare arms; let us look into the bin, and see if we can discover any thing. The bottom of it is filled with water, just above the surface of which, extending from end to end, we see a circular shaft, armed with iron blades, crossing it at intervals of two inches apart, and protruding six inches or more on each side of the axle, at right angles with it, and with each other. In one corner of the bin is the mouth of a pipe, which, even while we look, discharges an avalanche of flour into the water; at the same moment some invisible power causes the shaft to revolve--slowly at first, that the light dust may not entirely blind us; then, as the flour becomes more and more saturated with water, rapidly and more rapidly, until the whole is thoroughly mixed up together; and in the space of four and a half minutes, one hundred-weight of flour is converted into dough. The revolutions of the shaft now cease, and our hitherto inactive friend proceeds to transfer the contents of the bin to a board placed to receive them, in masses resembling in shape Brobdignag pieces of pulled bread. Again, we see that the surface which a moment since was free from mark or indentation, is now scored all over in hexagonal figures. The lower side of the plate, in fact, consists of a bed of sharp-edged punches of hexagonal form, reminding us in appearance of a gigantic honey-comb, which at one blow divides the dough into single biscuits, leaving no superfluous material except the trifling inequalities of the outer edges. Twenty-four whole biscuits, with a due complement of halves, are cut out at one stroke, each of which is at the same time impressed with the broad arrow of Her Most Gracious Majesty. We now see why the old circular form of the biscuit has given way to the hexagonal.