82 Ventilation with Heating. 



The President said : — I wish to ask if there is any special merit 

 in the " Sirocco " stove compared to any other dry stove in the 

 market ; and I would also like to ask, with regard to the heating 

 of churches and other buildings where there are large windows, 

 if the system of ventilation Mr. Workman has advised holds 

 good. My reason for doing so is simply this, that in the church 

 I attend there was a draft, apparently from the ceiling, but it 

 altogether proceeded from the condensation of the large windows, 

 and as soon as some hot water pipes were placed at the base the 

 downward draft immediately ceased. Hence I should like to 

 know whether it is possible to employ this system of hot air to 

 overcome a defect such as I have named. 



Mr. J. Brown said : — There would appear to be two great sys- 

 tems of warming rooms, one by heating the air in the room, and 

 leaving it to communicate its heat to objects in the room ; the 

 other by heating the walls, furniture, etc., by radiation from an 

 open fire. The latter, which I take for various scientific reasons 

 to be the better, is the method adopted by nature where the sun 

 heats the ground by radiation ; the ground in turn warming 

 the air in contact with it. We do not, however, even with 

 open fires, follow this method completely. We carefully 

 arrange rhem so as to heat the ceiling instead of the floor. We 

 put them down in the base of the wall and then raise a barricade 

 in the shape of a fender in front, with the result that most of 

 the radiant heat goes to the ceiling, where it is certainly not 

 wanted. The sun is, of course, not down on the ground but 

 up in the sky, and we should do well to imitate that arrange- 

 ment. I should not put the fire place in the ceiling, but I 

 would raise it considerably above the floor. 



It is much to be wished that the directors of our public halls 

 would take this matter of ventilation to heart, and endeavour 

 to save people from the effects of foul air, which so often results 

 in their being taken out in a fainting state. In his illustration 

 showing that persons closed up in a large room for a week, even 

 with food provided, would probably be found dead at the end of 



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