136 



The Rorists' Review 



Araix. 20. 1022 



a night fireman is not required. Of 

 course, a properly arranged steam plant 

 can generally be left for five or six hours 

 with safety, but, if anything does go 

 wrong, the injury to the houses will gen- 

 erally be greater than in a house heated 

 with hot water. 



The data furnished merely give an 

 idea of the number and size of the pipes 

 used, but a good deal depends on the 

 arrangement, height of returns, etc., 

 and, besides, the sketch sent on does not 

 indicate in all cases the length of the 

 returns. 



The two houses heated by hot water 

 are side by side, with a common wall be- 

 tween them. They are 18x70, with out- 

 side walls of brick six feet in height. 

 Each house has three 2-inch overhead 

 flow pipes, each of which supplies four 

 lV4-inch returns. So far as the amount 

 of radiation is concerned, it is approxi- 

 mately correct, although it would be 

 well to increase it about ten per cent to 

 maintain 60 degrees with an open-tank 

 system. 



The principal defect seems to be that 

 for houses of this length the flow and 

 return pipes are both too small, unless 

 the system is under pressure, in which 

 case it should answer for 60 degrees, if 

 the boiler is of sufficient capacity. For 

 each of the houses it would be well to 

 use three 2i/^-inch flow pipes and nine 

 2-inch returns. If the returns are higher 

 than the top of the heater, a good cir- 

 culation will be secured and at least 60 

 degrees can be maintained in zero 

 weather. 



■ The steam-heated houses are joined at 

 right angles like a capital L, with the 

 boiler house in the angle between the 

 houses. One house is 25x70 feet, while 

 the other is 18x70 feet. The wide house 

 has two and one-half feet of glass in the 

 exposed walls. The other has two feet of 

 glass in one wall. All of these houses 

 have three 2-inch flow pipes, with twelve 

 1%-inch returns. Only nine returns will 

 be required in the wide house and six in 

 the narrow house to maintain 60 degrees 

 in zero weather. 



BLACK BULL 



Tsssa 



"BUILD STRONG" 

 PURE ASPHALTUM 



Greenhouse Cenent 



ACID 



HEAT 



WEATHER 



PROOF 



Barrels, 50-60 gallons $1.20 per gal. 



1^ BarreU, 30 40(;ulloDB 1.25 per gal. 



Kegs, 20 gal Ion 8 1.3i» per gal. 



Paui,5-10gallons 1.35 per gal. 



F. O.B.CHICAGO, ILL. 

 10% disponnt. Cash wUh order. 

 Re . Terms— 2%, 10 days. . Net, 3i) days. 



BUT DIRECT FROM IHANUFACTURER 



ROBERT M. LUCAS CO. 



19SO W. 31st Street, 

 CHICAGO, ILL. 



I I i I I in 



[REENHOUSESI 



You can build now at big savings 



OUR PRICES are down to rock bottom. We offer 

 helpful assistance to those who want to build. 



Pnt Your GreenliouB* Problanu Up to Us. 



W« go emywh^rm in thm Unitmd Statma to tabmitpUuu and /nicta. 



MetropolitanMaterjcilCd 



^PATENTED yOMJBENHOVSCS 



1299.1323 FLUSHING AVE. 



BROOKLYN, N, Y. 



!■■*■! 



Maiehead 



Points the 

 Way to 

 Economy of Fuel 





IN NOW to find out aboat the "Morehead" System. Send right away 

 for the "Morehead" book for florists. In it you will find an easily understood 

 discussion of the boiler and condensation Question from the practical 

 standpoint of the grower of flowers. Write for this help TODAY. 



MOREHEAD MFG. CO. 



Dept. "M" 299 



DETROIT, MICH. 



Nr. Greenhonse Owner 



Do your greenhouses need paint- 

 ing, puttjing or repairing this 

 summer? 



Now is thm timm to gmt an 

 mttintatm on your work. 



MIKE WINANDY, Jr. 



Greenhouse Builder 



6054 Ri^c Atc., CHICAGO. ILL 



Union Grate 



A Rocking Grate that Saves Coal 



Write for catalogue and prices 



MARTIN GRATE CO., >^^^^^-'^^ 



CHICAGO 



COAL COSTS 

 MONEY 



Are yoa bunnif Bort tkaa yra tkoaU? 



FRCC ENQINEERINQ 



We maintain a staff of Combustion 

 Engineers who will come into your 

 plant, look it over and if we can cut 

 your coal bill we will tell you how 

 we can do it. There is no obliga- 

 tion to buy COKAL HAND STOKERS. 

 We win guarantee to save ccmJ in 

 your plant if it is possible to do it. 



CcM us up or vrrite — 



Cokal Stoker Corporation 



3S8 East Ohio Straat 

 TaL SaMriw 7701 CHICAGO 



A GOOD BOOK FREE 



THE FISHER TRAP 



Write for Wr-NOW 



LOOK for our ad in May 11 issue 



FISHER GOVERNOR CO. 

 MARSHALLTOWN. IOWA. 



ESTABLISHED 1867 



S. WILKS MFG. COMPANY 



Manufacturers of 



WILKS HOT WATER BOILERS 



FOR GREENHOUSE HEATING 

 3517-3539 Skiefab Ave., CHICAGO. ILL 



