The process can be adopted in the snaking of wooden
or stone stairs, by which each " riser " would be so locked into the " tread " that the stairs would be self-supporting. There is scarcely a thing in the whole range of building oz, cabinet making, to which this joint could not be applied, with a saving of labour truly surprising ; so much so, that one man in making boxes can do as much in five minutes as by the ordinary means he could do in an hour. Fur ship's decks, railway platforms, flooring, tic., the joint would be invaluable.
exhibited to us a brass box, air tight, made by his joint, without the aid of solder or rivets ; the pieces being simply put together by placing the tongues in the grooves, and as easily taken to pieces. We understand the joint has been submitted to Government inspectors, and favourably received.
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