100 



The Weekly Florists^ Review* 



Mat 23. 1912. 



Ford & Kendig Co. 



"SpePemed" Wnught tin 



Especially adapted for Greenhouse Work. Flfc 

 tings. ValTes, Toola. etc. 



24tli tod Wood Stt. 



PHUADELPHIA. PA 



Mention The Review when yon write. 

 DO TOU KNOW ABOUT THK 



Nartin Rocking Grate 



IT SAVES COAL 



MARTIN GRATE CO.,"' iSi^r&? "■ 



Mention The Review when you write 



SMITH, LINEAWEAVER& CO. 



COAL 



Anthraeit«, BltnmlnoiiH, Coke and Gas Coal 



T^.VL^U, Philadelphia 



Mention The Review when you writa. 



Greenhouse Heating. 



Subscribers are invited to write the 

 editor of the Heating Department, de- 

 scribing their troubles or asking any 

 questions regarding the heating of green- 

 houses, the piping or boiler-room. But 

 please do not ask us to make a choice of 

 apparatus for you. Each boiler adver- 

 tised in The Review is a good boiler, and 

 the advertisers sell them on their merits. 



DATA ON HEATING. 



With steam heating one square foot 

 of radiation will heat to a temperature 

 of: 



Degrees. Sq. Ft. Glass. 



40 to 50 5 to 6 



60 to 60 4% to SVi 



60 to 70 4 to 5 



With hot water as the heating me- 

 dium one square foot of radiation will 

 heat to a temperature of: 



Degrees. Sq. Ft. Glass. 



40 to 50 3% to 4% 



50 to 60 8 to 4 



60 to 70 2% to 3% 



A wrought iron pipe 100 feet long 



will expand as follows, the figures at 



the left being the temperature of the 



pipe when filled, and the headings of 



the columns in the center the degrees 



of heat in the pipes in operation: 



Temperature In Operation Exp's'n 

 At start 180° 215° 



Zero 1.44 1.72 Inches 



32 1.18 1.47 Inches 



64 93 1.21 Inches 



Under favorable conditions one square 

 inch of grate surface is suflScient for 

 one square foot of direct radiation in 

 medium sized boilers. 



ABOUT SWING CHECK VALVES. 



Will a swing check valve work satis- 

 factorily on the return end of a return 

 steam pipe? At present I have valves 

 on both ends, but wish to avoid run- 

 ning from one end of the house to the 

 other when turning off steam from cer- 

 tain pipes. W. E. F, W. 



If the coils are four to six feet above 

 the check valve, there should be no 

 trouble about using it with low pressure 

 steam. 



Make Your 

 Boiler an Asset, 

 Not a Liability 



A boiler coatB enough so that every florist should be anxious to 

 get the most possible for his money; he should closely investigate sev- 

 eral styles before choosing. The more you investigate the more sure 

 it is that you'll buy the Superior Standard. It was designed spec- 

 ially for greenhouse work after a close study of what was needed. It 

 is easily cleaned, although it has more flues than any other boiler, but 

 —more flues give more heat; more flues require less fuel; the water 

 heats quicker and hotter because the volume of water heated by each 

 flue is smaller. All we ask is a chance to show you. 



Write today for Catalogue 



SUPERIOR MACHINE & BOILER WORKS 



Superior and Green Sts., CHICAGO, II L. 



Mention The Review when you write. 



IMPROVED RETURN TUBULAR 

 FIREBOX BOILER 



Johnston Heating Co. 



131 E. 26tli St., New York City 



Mention The Review when you wm. 



THE FUEL SITUATION. 



The anthracite coal miners, by an 

 overwhelming vote May 18, ratified the 

 agreement with the mine operators that 

 had previously been rejected and the 

 hard coal mines were reopened May 22, 

 after a shutdown of about seven weeks. 

 It will, of course, be several days be- 

 fore the production is normal, but peace 

 is now under contract for two years. 

 In the bituminous fields production is 

 rapidly approaching normal, the shut- 

 down having been for only a few days. 

 The fuel markets are easy this week. 

 Prices, which took a big boom when a 

 protracted labor war seemed imminent, 

 have dropped back to about the usual 

 level for this time of year, but the 

 tendency still is downward rather than 

 upward, the reserve supplies of coal, 

 accumulated to guard against a strike, 

 keeping a large number of buyers out 



A Steady 

 Pressure 



will always 

 be main- 

 tained in 

 TOur steam pipes, no matter 

 how the pressure at the boiler 

 fluctuates, if you equip your 

 main lines with these valvee. 

 Carry 40 or 60 pounds pressure 

 on the boiler, set the 



Hughson 

 Regulating Val^ 



to carry 5 or 10 pounds oi 

 line and you will always h«^ a 

 reserve in case of a sudden ^op 

 in temperature. This vaTve 

 saves both fuel and worry. Ask 

 for catalogue and particulars. 



n Steam Specialty Ci. 

 5021-3 S. State St, Ckicaii 



\ 



Mention The ReTlew when .too writ*. 



of the market. The coal on the rail is 

 what makes a weak market; the ad- 

 vance in wages given the miners, while 

 not all that they asked for, makes 

 necessary contract prices for next sea- 

 son a few cents a ton above those paid 

 last season. 



EADIATING SURFACE OF PIPE. 



It is evident, from the nature of 

 many- inquiries received by The Eeview, 

 that a considerable number of florists 



