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These stoves shown in Fig. 2 " are eighteen inches in diameter and are surrounded by a jacket made of No. 24 crimped, galvanized iron thirty-six and a half inches in diameter, thus having a space of about nine inches around the stove except at the door, where a suitable recess makes tight joints. This jacket is connected by an opening 12 x 20 inches which comes from outside of the building, the inlet in lower stories being four or five feet from the ground and covered with a netting."

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The suggestion is made to have the incoming duct open from both sides of the house and provided with proper dampers, thus affording an opportunity to obtain a supply of air from the windward side of the building, and to regulate the amount of air supplied to the jacket around the stove.

To facilitate the passage of impure air from the room, the company provides a heated flue as represented by Fig. 4.

FIG. 4.

This is made of corrugated galvanized iron with a stove inside. They claim it is cheaper than a brick shaft, but there is a constant expense to run an extra stove.

I think a draft could be created in the outgoing flue in a

different way and with no additional expense above first cost. Build a shaft large and from the ground, with an opening on a level with the floor. I would then have the smoke flue from the stove pass into this and continue through its centre to the top, depending upon the heat it produces to cause a draft.

Stove.

田田

Inlet to outgoing flue.

FIG. 5.

Nothing new is claimed by this system of heating and ventilating our common schoolhouses, but it has proved itself so admirably adapted to the demands, equally heating the whole room and removing the impure air, without the danger and discomfort of cold drafts from open doors or windows, we wish it would be more generally adopted.

We believe the interest of the common schools of America should be continually in the minds of the whole people, that no expense or care is too great to make them as they have already been called, "the divinest thing on earth."

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