88 



The Florists^ Review 



September 4, 1013. 



What is the Host Vital Point in Grate Construction? 



Grate makers and users agree that the most important point is to keep 

 the air spaces open as long as possible under all conditions. 

 We guarantee to keep the air spaces of the 



MARTIN ANTI-FRICTION ROCKING ^RATE 



open longer under any conditions than can be done by an^ other grate 

 in existence. 



The hottest fire you can build will not warp a "Martin" and it can be 

 installed without disturbing the brick work. 



We refer to Peter Reinberg, Emll Buettner, Bassett & Washburn, Wietor Bros., Adam 

 Zender. Sinner Bros., Albert Dickinson Co., and many others. 



Write for testimonials and full particulars. 



343 So. Dearborn St. 

 CHICAGO 



NARM GRATE CO., 



2.000.000 TONS ANNUAL CAPACITY 



TIAfTOnpAlT-THACKER and 

 IlvUlJ 1 Un-POCAHONTAS 



v\ousro/v 



TH.ACK ER 

 COAL- 



COALS 



V. ." \jj> 



nAOBHASI 



ESPECIALLY ADAPTED TO FLORISTS' USE , 



The high standard of Houston Quality, Houston Preparation and Houston 

 Service has made these coals Famous in the Greenhouse and Florist Trade. 



POCAHOJiTjtfS^ 

 .COAi- 



riADE NARK 



Main Office 

 Union Truat Bkfs.. Cincinnati 



KuPER HooD, Gen'l Sales Atrt. 



HOUSTON COAL COMPANY 



Southarn Offica 



Waatam Offica '•"^'w S'"" "'If'.K"*'*?'*' ^'' 



Old Colony BUg., Chlcaso R. C. Cantelou, Western Vgr. W. W. Houston, Southern Mgr. 



Greenhouse Heating. 



THE FUEL MARKET. 



"Ever since April the coal trade the 

 country over has been speculating 

 upon the influence of the fall trade," 

 says the Black Diamond. "A good 

 many districts have enjoyed a bigger 

 summer tonnage than ever before and 

 have had unprecedented summer prices 

 upon the clear presumption that there 

 was going to be both a coal shortage 

 and a car shortage this fall. The time 

 has come when both buyers and pro- 

 ducers are beginning to sit down and 

 count the immediate prospects even as 

 four or five months ago they began 

 counting upon the prospects. Candidly, 

 the future is decidedly in doubt, be- 

 cause no one knows what the business 

 situation is going to be, and because 

 no one knows precisely what policy the 

 householder is going to follow." 



The facts of the market are these: 

 The big consumers have bought more 

 coal this summer than ever before. 

 However, outside of New England and 

 a few places in the northwest, the re- 

 tail dealers have not, apparently, 

 bought the customary amount of stor- 

 age coal. The screenings market in 

 and around Chicago is under heavy 

 pressure from the big buyers, but the 

 demand for western lump coal has 

 been improved within the last week. 

 The spot market could and really 

 should absorb a great deal of smoke- 

 less coal. Lump and egg may not be 

 quite so strong as it was, but the busi- 

 ness in that coal is not heavy. At 

 present mine run is selling for $1.50 

 to $1.65 f. o. b. mines, with emphasis 

 upon the latter price, while lump and 

 egg is quoted at $2.25 to $2.50, with 

 emphasis upon the higher figure. 



GIBLIN BOILERS 



For Greenhouses. 

 STEAM AND WATER 



GIBLIN & CO., 



109 Broad St., 



UTICA. N. Y. 



Mention The Renew wben yoo wnu. 



Steel 



Return 



Tubular 



Boilers 



The most economical type of boiler for Oreenhonse 

 heating. Highly recommended by well known florists 



Johnston Heating Co. 



131 E. 26th 8t.p NEW YORK 



Mention The Review when you write. 



RELATIVE SIZE OF MAINS. 



We expect to install a tubular boiler 

 containing 460 feet of 3-inch tubes, on 

 fifteen square feet of grate. We esti- 

 mate that this boiler has a capacity of 

 5,000 square feet of greenhouse water 

 radiation. Will a 6-inch outlet and in- 

 let be ample, or do we need a 7-inch 

 to care for all the boiler will be good 

 for? Will you please tell me how 

 much radiation a 4-inch flow pipe will 

 carry, with grade enough to give good 

 circulation? What proportion of radia- 

 tion to glass would be needed in a 

 forcing house that we could run as high 

 as 80 or 85 degrees? J. D. S. 



A tubular boiler with 460 feet of 

 3-inch pipes can be rated at nearly 

 forty horse-power and this will fijr^ 

 nish 5,000 or even 6,000 square feet of 

 radiation, provided the returns are not 

 larger than 2-inch. If 3-inch or 4- 

 inch returns are used, a considerable 

 reduction in the estimated capacity of 

 the boiler should be made. 



The capacity of a 4-inch pipe will 

 depend considerably upon the size and 



Simonds Heating & Specialty Co. 



Grand Rapids, Mich. 

 QREENHOUSB 



ONE POUND PRESSURE 



VACUUM HBATINO SYSTEMS , 

 FOR A STEADY PRESSURE 



THE HUGHSON RECDUnNG 

 VALVE 



HUGHSON STEAM SPECIALTY CO. 



802 1.3 S. Stat* St., Chlcaso 



BYERS' 



Gsannteed Full Weight Wrought Iron Pipe 



Lap-welded in sizes ovdr 1^-inch. 



ETTTDIGS. VALVES. BOILERS. RADIATORS. ETC. 

 JOHN MANEELY, 



309.311-313 Arch St.. PHILADELPHIA. PA- 



length of the returns, as well as on 

 their height above the boiler. Thus, it 

 will supply more square feet of radiv 

 tion if the returns are 200 feet long 

 than when they are only fifty fe'3t 

 long, and an elevation of the returns 

 to a height of five feet above the 

 boiler will materially increase the ca- 

 pacity of the mains, as compared with 

 an elevation of one or two feet. The 

 grade of the pipes has little to do with 

 the circulation, except that when there 

 is .considerable ,gTade it necessarily 

 implies that one end at least is ele- 

 vated. Ordinarily a 4-inch pipe will 

 supply 1,000 square feet of 2-ineh 

 pipe and this may be increased twenty- 

 five per cent if they are of good length, 

 and elevated. 



While a 6-inch flow and return might 



