82 



The Florists' Review 



May 31, 1917. 



H. H. LINEAWEAV[R & CO., Inc. 



COAL 



ANTHRACITE 



and 

 BITUMINOUS 



West End Trust Building. PHILADELPHIA 



17 Battery Place. NEW YORK 

 Nutting Building LEBANON, PA. 

 Mention The Review when you write. 



Greenhouse Heating. 



Subscribers are invited to write the 

 Editor of this Department with regard to 

 any details of greenhouse heating that 

 are not understood. But please do not 

 ask The Keview to make a choice of ap- 

 paratus for you. The greenhouse heating 

 equipment advertised in this paper is, we 

 believe, the best for the trade to buy, 

 and each article the best in the special 

 field of its adaptation. 



WANTS A HIGHER TEMPERATURE. 



Kindly tell me how many more 2- 

 inch pipes will be required, in houses 

 that now have a temperature of 55 

 degrees, to raise the temperature to 

 64 degrees in zero vveather. 



L. G.— 111. 



To increase the temperature that can 

 be maintained in a greenhouse from 

 55 to 64 degrees, we would increase 

 the amount of radiation at least twenty- 

 five per cent. That is, if there are 

 now twelve pipes we would put in 

 three more. We would add the same 

 number if there are now either ten 

 or eleven pipes. The addition of two 

 pipes wliere there are nine at present 

 would answer if it is an easy matter 

 to secure 55 degrees, but otherwise it 

 will be more satisfactory to add three 

 pipes. 



When an increase in the number of 

 return pipes is made, care should be 

 taken not to overtax the flows. It will 

 probably be safest to add one or more 

 flow pipes in each house. A 2-inch flow 

 will handle two 2-inch returns in houses 

 up to 1(10 feet in length, while a 2V^-inch 

 flow will carry three or four 2-inch 

 returns in a house 150 feet long. 



A HOUSE FOR SWEET PEAS. 



Will you please give me some in- 

 formation in regard to piping my 

 greenhouse for hot water heat? All 

 the beds will be solid and will be used 

 for growing sweet peas. The house 

 is of pipe-frame construction and is 

 29x75. It is seven and one-half feet 

 high to the eaves and fifteen feet to 

 the ridge. There are four feet of glass 

 in each side wall, above three and one- 

 lialf feet of wood. The boiler shed 

 is at the north side of the house. I 

 am planning to use three 2%-inch 

 flows. How many returns will be 

 needed? Can li/^-inch pipe be used for 

 the returns? What size of boiler will 

 be required? It will be set in a pit, 

 below the level of the greenhouse floor. 

 I want a temperature of oG degrees 

 in zero weather. 



A. J. M.— Mich. 



While we prefer to use 2-inch pipes 

 for tlie returns in houses tliat are 

 seventy-five feet long, good results can 

 be obtained with lVi>-inch returns, pro- 

 vided they are at least three feet above 

 the top of the boiler. 



We would suggest the use of three 



i!lllllllllllllllllilllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll|P| 



i ED BacktoBo Her=|> J;*^ , „ , ^ 



Economy of Fuel | 



m 



EGIN NOW to find out about the "Morehead" System. Send right away 

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

 stood discussion of the boiler and condensation Question from the prao- 

 tloal standpoint of the Grower of Flowers. Write for this help TODAY. 



= MOREHEAD MFG. CO. 



Dept. "M" 



299 



DETROIT. MICH. E 



silllilliillillllliillllliiiliiliililiiiiliilllllililllllilililililliliilllililililililiiiiilililliillllllS 



Mention The Review when you write. 



Pipe Fittings -- Imico Boilers 



-FOR GREENBODSB WORE- 



ILLINOIS Malleable iron co. 



1801-1825 DIVKRSEY BOULEVARD CHICAGO 



Dixon's Graphite 

 Pipe Joint Compound 



Saves time, money, temper 

 and toold. Makes tlKhter 

 Joints. Never sets like a 

 cement. Keeps Joints well 

 lubricated. Send for book- 

 let No. 64 D. 



Joseph Dixon Crucible Company 

 Jersey City, N. J. 



Hansen Rocker Grates 



Are best for greenhouse use. 

 Write for particulars. 



HANSELL GRATE CO. 



654 RaUway Exchange BIdtf.., CHICAGO 



Mention The Review when you write. 



STEEL 



RKTURN 

 TUBULAR 



BOILERS 



Johnston HoaUng Co. 



ISl ■. 26th StTMt NKW YORK 



Mention The Review when yon write. 



2%-ineh flow pipes, placing one upon 

 each plate and the other three feet 

 below the ridge. For the returns we 

 would use fifteen 2-inch or nineteen 

 lM>-incli pipes, and would use five 

 pipes on each side wall, connecting them 

 with the flows on the plates. The other 

 returns should be joined with the flow 

 under the ridge, and may be run in each 

 direction along the end of the house to 

 the corners and then along the side 

 walls under the other returns back to 

 the boiler. It is sometimes desirable 

 to have a little more overhead heat, 

 in houses as wide as twenty-nine feet, 

 than would be furnished by one flow 

 pipe, and this can be obtained by run- 

 ning one of the returns back under 

 each of the purlins, or on the purlin 

 posts. 



We would select a boiler rated for 

 1,200 square feet, or with about six 

 square feet of grate surface, although 

 this will vary with the boiler. 



ST. LOUIS. 



The Market. 



The market last week was crowded 

 with stock. The demand was fairly 



WILKS SELF- FEEDING 

 HOT WATER BOILER 



For Economy, Durability, Dependability 



InstaU a WILKS 

 aad forget your 

 troubles. 



No night fire- 

 man required— 

 as the magazine 

 or coal chamber 

 holds sufficient 

 fuel to keep fire 

 10 to 12 hours 

 without atten- 

 tion. Best made 

 for a small 

 greenhouse. 



Send for Catalogue 

 and Prices 



Telephone 

 Yards 866 



S. WILKS 

 MFG. CO. 



23 Shield! Ave., 

 CHICAGO, ILL. 



Mention The Reylew when you write. 



good some days, but it made no im- 

 pression on the large consignments that 

 came in daily. The wholesalers had a 

 hard time disposing of the supply at 

 anything like a good price. The stock 

 that arrived showed plainly the effects 

 of the warm weather. This week, 

 however, business should be good, as 

 quite a number of advance orders for 

 Memorial day already have been 

 booked. Prices will stiffen up consid- 

 erably, as the growers will be off crop 

 on carnations and indoor sweet peas 

 will shorten considerably. They are 

 about through for the season. The 

 wholesalers expect a big cut of peonies 

 from local and southern growers. A 

 heavy crop of roses, too, is expected to 

 help out considerably. Easter lilies 

 are in big supply and $5 per hundred 

 was the prevailing price last week. 

 Valley is in great demand, but is quite 

 scarce in this market. Cape jasmines 

 from Texas are arriving in large quan- 



