. Ventilation and warming of buildings. ow allowed a stream of cold air to drop upon them. XoHMAL, 111., March 1, D. Smead & Co., Toledo, Ohio: Dear Sirs,—In regard to the furnace you set for us last fall, I write to say that we are more than satisfied; we are delighted. The only trouble we have had is to keep from making too much fire. The temperature is even and deli^jhtful all over the house. AVe are especially happy in having fathers and mothers room .so nicely warmed. Every winter before they have had to move into the back parlor because we could not heat their room. AVe want
. Ventilation and warming of buildings. ow allowed a stream of cold air to drop upon them. XoHMAL, 111., March 1, D. Smead & Co., Toledo, Ohio: Dear Sirs,—In regard to the furnace you set for us last fall, I write to say that we are more than satisfied; we are delighted. The only trouble we have had is to keep from making too much fire. The temperature is even and deli^jhtful all over the house. AVe are especially happy in having fathers and mothers room .so nicely warmed. Every winter before they have had to move into the back parlor because we could not heat their room. AVe want to thank your superintendent for his kind and careful attention while introducing the apparatus. After the furnace was finished and ready for ase mother was carried ilown cellar. She had not been down for more tlian four years Vjefore. .She was very much pleased with the looks of things; she thinks the front of the furnace too handsome for a cellar, it would almost <io for a jiarlor ornaaient. Very truly yours, Flora COLD AND FOUL AIB, ,^<^^ei^^^yy/////////////^ 11 i^ \ THE POPULAR MISTAKE. Dr. : But many people seem to think that warm air must be bad air. Mr. Smead : The temperature of the air is not an index of impurity ; it is upon the theorythat warm air is bad air that has caused people to ventilate (J) their rooms at the top, as this cutillustrates, and that is what may be called the popular mistake. Omng to fJis commonly mistakenbelief thai the breath rises, openings are generally made at the top of tTui room, but as they let allwarm air out and leave the occupied portions cold and foul, they are always closed in winter, andconsequently such ventilation (?) has well earned the reputation of humbug. REPLY FROM THE CHAIRMAN OF THE HIGH SCHOOL BOARD, CHATHAM, ONT. Chatham, November 14, C. , Esq., Secretary Board of Public School Trustees, Toronto: Dear Sir,—I found your letter awaiting me on my return from Toronto. In reply to your inq
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