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116 



The Florists^ Review 



Jdlt is, 1920 



Greenhouse Heating 



Subscribers are invited to write the 

 Editor of this Department with regard to 

 any details of greenhouse heating that 

 are not understood. When information 

 is desired regarding the capacity of boil- 

 ers, or the amount of radiation required 

 for a greenhouse, the needed temperatures 

 should be stated in the inquiry, as well 

 as the amount of glass in the side walls, 

 and the dimensions and general arrange- 

 ment of the greenhouses. It is often help- 

 ful, also, to have a sketch showing the 

 location of the houses. 



SUBVEY SHOWS COAL SHOETAOE. 



How the country has run down in its 

 stock of soft coal is strikingly shown 

 in a report just issued by the federal 

 geological survey. These official figures, 

 embracing every state in the Union, 

 shovr that huge industrial and utility 

 plants of the nation have been going 

 along during the last few months with 

 an average of from one to two weeks' 

 supply of coal. 



While in ordinary times there is a 

 supply of some 35,000,000 tons of coal in 

 the country's bins — that is, coal in the 

 hands of great and small consumers — 

 in the early spring months, the country 's 

 surplus throughout last spring was al- 

 most entirely exhausted. 



With an increasing demand for coal 

 throughout the country and lessened 

 production because of car shortage, the 

 average of stocks in the hands of man- 

 ufacturing plants, public utilities and 

 other large consumers throughout the 

 country gradually diminished during 

 June. Unofficial reports show that 

 many of the manufacturing plants by 

 that time had run down to a supply that 

 would last only a little over a week. 



Inability of coal operators to get any- 

 where near an adequate supply of cars 

 to take coal from the mines, in an effort 

 to relieve the shortage, is brought out 

 by the geological survey. Reports em- 

 braced in the survey's statement from 

 some 3,000 mines, representing approxi- 

 mately sixty per cent of the aggregate 

 soft coal capacity of the country, show 

 that there was an average of forty- 

 three and three-tenths per cent of po- 

 tential production lost through shortage 

 of coal cars for the entire country. In 

 some of the fields, notably West Vir- 

 ginia, Kentucky and Illinois, the loss 

 of production due to shortage of cars 

 ran from fifty per cent and up to sixty- 

 five per cent of normal. 



In commenting upon the car supply 

 the geological survey says: "The 

 shortage of cars remains acute over 

 most of the territory east of the Mis- 

 sissippi river. Out of thirty-one dis- 

 tricts reporting, only three — Michigan, 

 Alabama and the combination rail and 

 river mines of the Pittsburgh district — 

 experienced a transportation loss small- 

 er than twenty per cent of full time. In 

 eleven fields the loss exceeded fifty per 

 cent and in three — northeastern Ken- 

 tucky, Harlan county and central Penn- 

 sylvania — it was greater than sixty per 

 cent." 



USING 2-INCH PIPE FOB BETUBNS. 



I intend to rebuild my present range 

 at another location and should like to 

 know about the heating. There are to 

 be six houses, 20x90 feet, three on each 



WHEN YOU BUY-QET A KROESCHELL 

 *THE BOILER OF UNEQUALED FUEL ECONOMY" 



^ 



The immense amount of direct self -cleaning: heating surface 

 and the thin vertical waterways cause this type of boiler con- 

 struction to heat water quicker than any other form of boiler. 



Hundreds of Florists' Review readers are using the 

 Kroeschell Boiler and mighty is their praise. The 

 year of 1920 has brought us an enormous number of 

 new customers who have seen our boiler in opera- 

 tion at other places. We attribute the large sales 

 of this season to the good work the Kroeschell 

 Boiler is doing every where. With our policy — "the 

 customers' interest first" — perfection of construc- 

 tion — factory to user prices — honest and "true 

 blue" boiler ratings — you simply cannot lose. 



PLACE YOUR ORDKR-DO IT TODAY 

 TELEPHONE OR TELBORAPH AT OUR EXPENSE 



KROESCHELL BROS. CO., 



444 W. Erie Street 

 CHICAGO, ILL. 



