. Florists' review [microform]. Floriculture. 102 The Weekly Florists' Review^ January 11, 1912. $40, and that copper flues, No. 11 gauge, would cost $102. Since No. 11 is the standard gauge for high pressure steam copper flues, would aot No. 14 be ade- quate for hot water, with no pressure except from the expansion tank, eight feet above the boiler? This would reduce the cost to $70. Since copper will not scale and is- therefore of great durability, and since by its use one is enabled to get the heat applied much closer to the water, would it not seem advisable, from an economical point of vi
. Florists' review [microform]. Floriculture. 102 The Weekly Florists' Review^ January 11, 1912. $40, and that copper flues, No. 11 gauge, would cost $102. Since No. 11 is the standard gauge for high pressure steam copper flues, would aot No. 14 be ade- quate for hot water, with no pressure except from the expansion tank, eight feet above the boiler? This would reduce the cost to $70. Since copper will not scale and is- therefore of great durability, and since by its use one is enabled to get the heat applied much closer to the water, would it not seem advisable, from an economical point of view, both in dur- ability and daily service, to use copper flues? What reader of The Keview can tell us from experience? S. C. Templin. BOILEB UNDEB BESIDENCE. I have two connected houses, 20 x 190 and 30 x 190. They measure twelve feet to the ridge pole and four and one-half feet to the eaves and have board sides. I have two boilers, twenty and twenty-four horse-power, and use hot water. Will these boilers heat an- other house, a new one, 30 x 180, along- side the old houses? The flow pipes at present start over the boilers, about eighteen inches from the top of the boilers, and the return pipes come in about one foot lower. I want to know the proper way to pipe the houses. At present the flow pipes and return pipes are all in the walks and the flow pipes are only about six to ten inches above the return pipes. The expansion tank is connected to the return pipes. As I understand it, the flow pipes should rise six to ten feet over the boilers, run with a gradual fall to the opposite end of the houses and then drop to the return pipes, which should also have a good fall back to the boil- ers. In my case it is difficult to let the flow pipes rise directly over the boilers, as the boiler room is under my dwell- ing. Could I let the flow pipes rise, say, four feet above the boilers, then go out from under the building and rise a second time, to within three or four feet of the ridge
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