S6 



The Florists' Review 



Febrdabt 4, 1915. 



H. H. LINEAWCAVa & CO., Inc. 



ANTHRACITE 



BITUMINOUS \#\^#%^H 



WMt Ind Trust BuUdinc. PHILADELPHIA 



1 Broadway. NEW TORE 



Vutttnt Baildins. LEBANON. PA. 



Moition Tb« BcTlew wb«B Ton wilte. 



Greenhouse Heating. 



GALVANIZED HEATZNG FIFE. 



Can you state whether there is, any- 

 where in the United States, a green- 

 house that is heated with galvanized 

 iron steam pipes and is getting good 

 results from such pipes? This question 

 is submitted by the head gardener of 

 one of the large public institutions in 

 Salt Lake City and he would appreciate 

 an early reply. B. P. C, 



I am not able to cite specific cases 

 where good results are obtained from 

 radiation composed of galvanized iron 

 pipe, and would say that it does not 

 afford as effective heating surface as 

 black pipe. The surface is not only 

 smoother, hence furnishing a smaller 

 amount of radiation than black pipe of 

 the same size, but the covering given in 

 galvanizing the pipes of itself does not 

 «onyey or radiate heat as rapidly as 

 black iron pipe. I have no exact fig- 

 ures showing the relative radiation of 

 the two classes of pipes, but a pipe 

 coated with lampblack will radiate 

 more than twice as much as tarnished 

 lead and more than eight times as much 

 as one of polished silver. From this it 

 can be seen that galvanized pipe does 

 not form eflScient radiation. 



BOILES CAFACITY ABOUT BIGHT. 



The boiler that I am using is thirty- 

 six inches in diameter and ten feet 

 long, with twenty-eight 3-inch tubes. 

 The boiler is of the horizontal tubular 

 type and the grate bars are 36x42 

 inches. Using ten pounds of steam, 

 could I heat 8,000 square feet of glass 

 to an average temperature of 62 de- 

 grees in zero weather? "Would there 

 be any surplus boiler capacity? I am 

 returning the water to the boiler by 

 means of a trap. I am located in east- 

 central Ohio. I do not wish to crowd 

 the boiler too much, as I do not think 

 it pays to do so. T. E. F. C. 



The boiler described would rate at 

 something above twenty horsepower, 

 and at a maximum would heat about 

 2,000 square feet of radiation. To heat 

 8,000 square feet of glass to 62 de- 

 grees in central Ohio, from 1,400 to 

 1,600 square feet of radiation should 

 be used, according to the construction 

 of the houses and the amount of ex- 

 posure. While this leaves a small 

 amount of surplus boiler capacity, 

 which might be utilized by careful fir- 

 ing, the results will be more satisfac- 

 tory and the heating will be more eco- 

 nomical in every way if no extra duty 

 is placed on the boiler. 



BETTER USE 2y2-INCH FLOWS. 



We are putting up a greenhouse 



31x80. The wall on one side consists 



of two feet of concrete and four feet 



of glass; on the other side, three feet 



' of concrete and three feet of glass. 



The Value of a Thermostat 



LET A FLORIST TELL IT 



TJERE is what a greenhouse man said in a letter to The Review: "The 

 ^^ value of a thermostat in a greenhouse may possibly interest you, so I take 

 the present opportunity of explaining its advantages. Three weeks ago I in- 

 stalled a Standard thermostat, made by the Standard Thermometer Co., putting 

 it in my rose house, 200 feet from the residence. After sundown each day I set 

 the low contact hand at 57 degrees and the high contact hand at 65 degrees. 

 The black temperature hand, to record 60 degrees, plays between these figures. 

 Should the temperature rise or fall, the alarm bell, just over my bed, rings 

 loudly. I consider this instrument a boon to any florist with a me- 

 dium-sized range, for it dispenses with the services of a night fireman. With 

 correct firing, I can keep a steady temperature of 60 degrees at night in the 

 rose house and also in four other houses, in all about 5000 feet of glass.,"— Thomas 

 E. TowERsoN, Spring Station, Ky. 



Aro YOU ablo to sloop In poaco? Writo today for circulars 



STANDARD THERMOMETER CO.'' V^K^^.'i.. 



Mention Th* B«Tiew when too wrtte. 



THE 



SYSTEM 



WITH 



Mi/oiehead 



M 



A 



PROVEN 



VALUE 



You'll find every progressive florist 



has some plan or other in mind for improving his greenhouses. And one of the most 

 important features of any greenhouse is the steam system. That's why the moat progres- 

 sive florists have install«i the Morehead System— the system that means perfect drainage- 

 even temperature— condensation returned to the boiler above ground— in addition to numer- 

 ous other advantages. But you will want the complete information. Our engineeis have 

 enabled many a florist to increase his greenhouse efficiency where before he thought it 

 wasn't possible. Let them help you. 



MOREHEAD MANUFACTURING CO., DETROIT. MICH. 



Today ^^^^^^^^H 



Mention The Review when yon write. 



WILKS 



Hot Wafer Boilers 



ARE THE MOST ECONOMICAL 

 BOIIERS rOR GREENHOUSES 



No Nlsht FIroman Raqulrod with our 



SELF-FEEDING 



HOT WATER BOILERS 



Send for Catalogue and prices. 



S. WILKS MFG. CO. 



S528 Shields Ave., CHICAGO 



Tlie height to the ridge is sixteen feet. 

 Both gables are glass. I should lilce 

 to know how many lines of 2-inch pipe 

 will be needed to heat the house with 

 hot water to a temperature of 55 de- 

 grees when the outside temperature is 

 15 degrees below zero. I am located 

 in northern Massachusetts. 



W. G. H. 



From the description of the house, 

 it is evident that it contains about 



^^ Superior '* 



INTERNAL-FIRED 

 BOILER 



For Hot Wator Hooting 



Snperiir Nicliiiie & Bifler Wirb 



•40.9S0 W. Suporior Stroot 

 CHICAQO 



