to this partition-one near each end and one in the inside will be sufficient. d, is the view of the pán in which the stove is set, and e, e, are bricks by which it is supported. Fig. 2, is a perpendicular transverse section. D, the body of the stove; E, the pipe conveying the heat to it; and F, the pipe to carry off the smoke; it passes througli a four inch brick wall, G, built temporarily to shut up the fire-place. f, f, is a curb made of two tubes of sheet iron, the one within the other, with a space of about two inches between them, and joined to each other at the bottom. The inner one is of a diameter just suffi cient to let the pipe E pass through it. The outside one has its upper edge bent outwards so as to fit a bevelling hole cut through the floor. The space between the two conjoined tubes is packed with clay or common earth, to serve as a non-conductor of the heat, which might otherwise endanger the floor or ceiling H below it.

This dumb-stove receives its heat from a cookingstove in the kitchen below it, which has, besides the ascending pipe, one branching horizontally from it and entering the kitchen chimney, and each having a damper, that the heat may thereby be diverted from the dumb-stove whenever it becomes necessary. The revolutions of the heat in the dumb stove are shewn by the darts from its entrance at A to B, the place where the smoke makes its escape. The bottom of the stove being open, whenever it is taken off the pan on which it stands, and the moveable partition, b, being taken out, there is no impediment to its being cleared as often as is necessary.

From this description it will be seen, that this dumb-stove has great advantages which those heretofore in use do not possess. It has nothing objectionable in its appearance; its structure is such as to give out the greatest quantity of heat that can be obtained from any, and it occasions little inconvenience from the room it occupies. By the ordinary use of the stove below by which the cooking of the family is chiefly done during winter, a sufficient warmth is communicated through this dumb-stove to the room above to make it perfectly comfortable in the coldest weather.