. The Florists' exchange : a weekly medium of interchange for florists, nurserymen, seedsmen and the trade in general. THE VAN RBVPER PERFECT GLAZIERS POINTS No rlghte or lefts. Prloe per box of 1000, 60o,by mall, 75e.; In lots of 6000 by ex., 65c. per 1000 HENRY A. DREER, 714 Chestnut St., Pi. When Writing Mention Florists Exchange The Scollay Boiler -FOR- GBEEWIOUSE BEflTlUG, ETC. Hot Water or Steam. Farmington, Conn., March 9, Invincible Boiler you placed in myCarnation houses has g-iven great did not have to run the boiler hard even whenthe thermometer stood
. The Florists' exchange : a weekly medium of interchange for florists, nurserymen, seedsmen and the trade in general. THE VAN RBVPER PERFECT GLAZIERS POINTS No rlghte or lefts. Prloe per box of 1000, 60o,by mall, 75e.; In lots of 6000 by ex., 65c. per 1000 HENRY A. DREER, 714 Chestnut St., Pi. When Writing Mention Florists Exchange The Scollay Boiler -FOR- GBEEWIOUSE BEflTlUG, ETC. Hot Water or Steam. Farmington, Conn., March 9, Invincible Boiler you placed in myCarnation houses has g-iven great did not have to run the boiler hard even whenthe thermometer stood 18 deg. below zero. Ithas proved Invincible in every respect. HuQH Chksney, Florist. Send Stamp for Catalogue and Price Cheerfully Given. JOHN A. SCOLLAY, 74 and 76 riyrtle Ave., Brooklyn, —AND— •invincible. 231 Water St., New York. When Writing Mention Florists Exchange. Boilers Hot Water and Steam. RICHMOND For Greenhouse Heating. I LRICHMOND STOVE CO.,NORWICH, YORK STORE,85 Center St. Boilers When Wrttlnx Mention Flortsta Exchange 312 The F=i-orisxs Exghknge. A Greenhouse Heating System A correspondent of Carpentry andliuihling; H. W. Douglass, Ashland, Pa.,in a recent issue of tbat journal pub-listies an interesting communicationrelative to heating a greenhouse, hisletter referring to previous articles thathad appeared in Carpentry and Building:Tlie greenhouse referred to is shown inelevation in Fig. 1, where the flow andreturn mains and branches are indicated,while Fig. 2 isa partial plan. The ar-rangement of the coils under the beds isshown in Fig. 3. The following extractfrom Mr. Douglasss communication ex-plains his method of calculating theamount of surface for this greenhouse: The primary question for our considera-tion is the amount of heating surface nec-essary under certain conditions; one can-not guess at the amount
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectfloriculture, bookyea
