84 



The Florists^ Review 



November 26, 1914. 



Steel 



Return 



Tubular 



Boilers 



Thit most economical type of boiler for Oreenhonae 

 beating. Highly reoommended by well known florlstr 



Johnston Heating Co. 



131 E. 26th St., NEW YORK 



Mention Ttie Kevlew when you write. 



Simonds Heating & Specialty Co. 



Grand RapidSp Mich. 

 QREENHOUSB 



ONE POUND PRESSURE 



VACUUM HBATINQ SYSTEMS 



Greenhouse Heating. 



THE SLOPE OF THE RETURNS. 



Will you kindly tell us how the re 

 turn pipes of a hot water system should 

 run in order to radiate the most heat? 

 We have a Kroeschell boiler. The main 

 flows, after leaving the boiler, run 

 through the middle of the houses over- 

 head and then drop to connect with 

 returns underneath the benches. These 

 return pipes are the subject of dispute. 

 Our idea was that they should have a 

 decided downward slant toward the 

 boiler, and that is the way in which 

 they are at present installed. A friend 

 has told us, however, that the return 

 pipes must run uphill in order to pro- 

 duce the best results. We have two 

 houses, 25x90 and 25x130, each contain- 

 ing twelve 1%-inch returns. A. W. 



The return pipes for hot water, as 

 well as for steam systems, should al- 

 ways run downhill. It is not necessary, 

 however, that they be given much slope. 

 The higher they can be kept above 

 the boiler, the better, so far as the 

 circulation is concerned. Therefore, 

 whatever the height where the coils are 

 connected with the flow pipes, the re- 

 turns should be run with just enough 

 slope so that the air will not pocket, 

 and then should drop vertically to the 

 boiler; that is better than to run the 

 returns all of the way at a gradual 

 slope to the level of the boiler. 



IN NORTHWESTERN OREGON. 



I am thinking of building a small 

 greenhouse and am doubtful in regard 

 to the heating of it. You will find 

 enclosed a sketch that shows the pro- 

 posed piping of the house. The house 

 will be 29x60, six feet high to the eaves 

 and twelve feet to the ridge, with one 

 run of 16x24 glass in the sides and the 

 rest boards. You will see by the sketch 

 that I propose having two 2%-inch 

 flows through the center of the house 

 and across the end. The returns would 

 consist of nine 2inch pipes, two of them 

 on each side and five through the rest 

 of the house, one under each bench. 

 All of the returns would come back to 

 a 2%-inch pipe that would enter the 

 boiler. 



I thought that by piping in this way 

 and having two flows instead of one, it 

 would be easy, when desirable, to turn 

 off half the heat, except one pipe, as 

 you will note that there is one return 

 more on one flow than on the other. 

 Now, do you think this will be piping 

 enough to heat the house to 60 degrees? 

 I am located in northwestern Oregon, 

 only about sixty miles from the Pacific 



WHY TAKE A CHANCE? 



You can't know (at best you only think you 

 know) what the temperature is in your green- 

 houses, nights and during your absences, unless 

 you have 



THE STANDARD 



RECORDING 



THERMOMETER 



Present price, $20.00; formerly $2S.OO 



It has made thousands of dollars for many flor- 

 ists and may do as much for you. Your plants 

 must have certain, steady temperature to do their 

 best. Use this thernrometer and you will know 

 whether they are getting what they need. It 

 leaves a written record under lock and key. 



"Please mall at once 25 charts for your Recordinir Ther- 

 mometer, wbtch I bought some seven years atro ai d which 

 is a Kood, reliable guide today." A. M. HKRR, Lancaster, Pa. 



STANDARD THERMOMETER CO. 



65 Shirley Street, BOSTON, MASS. 



Send for 

 Circulars 



Mention The Rerlew wb«n you write 



This boiler Is guaranteed to do the 

 work and costs less to Install 

 and operate. Write for prices 

 and recommendations. 



Compiat* installations or Altsrations. 



METROPOLITAN MATERIAL 

 COMPANY 



Patantad and Pandlns 



IRON FRAME, CURVED EAVE and 

 SEMMRON GREENHOUSES 



Oreenhouse Designers - Heating Engineers 

 Hotbed Sash - Glass 



1398-1408 Metropolitan Avenue 

 BROOKLYN, N. Y. 



Mention The Review when you wrlte^ 



SMITH, LINEAWEAYER & CO. 



COAL 



ANTHRACITE 



BITUMINOUS 



Weat End Trust Buildins. PHILADELPHIA 



1 Broadway. NEW YORK 

 Watting BuildinK, LEBANON, PA. 

 Mention Tb^ Review when yon write. 



coast, and the weather never becomes 

 extremely cold here. F. W. 



I am not sufficiently familiar with the 

 winter climate in your part of Oregon to 



On An Even Basis 



With the installation of the More- 

 head System on your steam lines the 

 condensation is returned to the boiler 

 —placed above ground— pure and hot. 

 Thus you dispense with the anti- 

 quated "boiler-in-a-pit" method of 

 steam line drainage. 



M/oiehead 



SYSXEM 



Furthermore you are assured of per- 

 fect circulation— constant, even tem- 

 perature-asavingof lime, fuel, labor 

 and heat. These are things worth 

 your careful consideration— they de- 

 cide between heating economy or 

 heating waste, good or poor stock. 



Mr. H. W. Pierce says: 



"Very satisfactory. Have saved 

 me fully 25 per cent in fuel. Be- 

 sides theysave cost of handling 

 ashes and require very little 

 attention." 



LET IT SAVE FOR YOU 



Write today-Dept. "M" 



Morehead Mfg. Co. 



DETROIT, MICH. 



177 



Mention The Review when you wri te . 



give a positive answer to the question. 

 For such a greenhouse in the vicinity 

 of Chicago, and in the north-central 

 states in general, I would recommend 



