What a house--what a workshop! It is quiet again. We have not sprung into the river. But had we been alone here, under such circumstances for the first time, we should have had no subsequent respect for our own instincts and promptitude of action if we had done any thing else. As it was, the thing is a sensation for life. We find that the whirling frame-work also contains sieves--that the invisible moving power is by a water-wheel under the flooring, which acts by a crank. But we are very much obliged already--we have had enough of "corning." We take our departure over the platform--have our over-shoes taken off--and finding that there is something more to see, we rally and recover our breath, and are again on the path by the water's edge. A man is coming down the river with a small covered barge, carrying powder from one house to another. We remark that boating must be one of the safest positions, not only as unconducive to explosion, but even in case of its occurring elsewhere. Mr. Ashbee coincides in this opinion, although, he adds, that some time ago, a man coming down the river in a boat--just as that one is now doing--had his right arm blown off. We see that, in truth, _no_ position is safe. One may be "blown off" any where, at any moment. Thus pleasantly conversing as we walk, we arrive at the "Glazing-House." The process of glazing consists in mixing black-lead with gunpowder in large grains, and glazing, or giving it a fine glossy texture. For this purpose four barrels containing the grains are ranged on an axle. They are made to revolve during four hours, to render them smooth; black-lead is then added, and they revolve four hours more. There is iron in this machinery; but it works upon brass or copper wheels, so that friction generates heat, but not fire. The process continues from eight to twenty-four hours, according to the fineness of polish required; and the revolution of the barrels sometimes causes the heat of the gunpowder within to rise to one hundred and twenty degrees--even to charring the wood of the interior of the barrels by the heat and friction. We inquire what degree of heat they may be in at the present moment? It is rather high, we learn; and the head-glazer politely informs us that we may put our hand and arm into the barrels and feel the heat. He opens it at the top for the purpose. We take his word for it. However, as he inserts one hand and arm by way of example, we feel in some sort called upon, for the honor of "Household Words," to do the same. It is extremely hot, and a most agreeable sensation. The faces of the men here, being all black from the powder, and shining with the addition of the black lead, have the appearance of grim masks of demons in a pantomime, or rather of real demons in a mine. Their eyes look out upon us with a strange intelligence. They know the figure they present. So do we. This, added to their subdued voice, and whispering, and mute gesticulation, and