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The Florists^ Review 



July 24, 1»1». 



GreenhoMse 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. 



EXPORTS MAY SHORTEN COAL. 



The rise in price of 6 shillings (about 

 $1.50) per ton on every kind of coal in 

 Great Britain is causing the retailers 

 of America in the coal trade to wonder 

 if they are to have enough for the de- 

 mand at home next winter. They fear 

 the big dealers will listen to the large 

 profits in exporting coal and leave the 

 folks at home cold when winter comes. 

 Of course, it would not pay United 

 States exporters to endeavor to compete 

 in England 's market, for the freight 

 cost from New York to Liverpool is 

 so heavy that $33 per ton is as low as 

 American coal could be sold in British 

 markets. But, on the other hand, Italy, 

 to which England ships much coal, pays 

 a heavy freight charge to Mediterranean 

 ports. If American coal exporters get 

 a fair freight rate to southern Europe, 

 the British price is now so high that our 

 coal would find tremendous markets in 

 Italy and her neighbors. 



If such prospect of good profits abroad 

 attracts much coal from our country, 

 then, in the words of the popular song, 

 "Heaven help the U. S. A." For every- 

 one must know by this time that be- 

 tween the slow buying and the labor 

 shortage the outlook is far from propi- 

 tious for coal consumers in this country. 

 If to these causes of shortage is added 

 that created by exportation of large 

 quantities of coal, those who have not 

 bought next winter's coal already are 

 going to have some difficulties in find- 

 ing fuel about the latter half of the 

 winter. 



HEATINO TWO GREENHOUSES 



We have a tubular boiler, eight feet 

 long and thirty-four inches in diameter. 

 We wish to heat two greenhouses, each 

 30x300 and ten feet high to the ridge, 

 with solid side walls three feet high. 

 We should like to keep up a temperature 

 of 55 degrees when it is 10 degrees 

 below zero. Will one 5-ineh flow pipe 

 from boiler supply five 4-ineh flow pipes, 

 each one to have two returns into a 

 5-inch return to boilert J. H. S. — Ind. 



Our suggestion for piping each of the 

 two houses described would be to use 

 five 21^-inch flow pipes. We would place 

 one upon each plate; another, two or 

 three feet below the ridge, and the 

 other two under the purlins. To make 

 up the radiation required for zero weath- 

 er, we would use ten 2-inch returns, 

 connecting two with each flow pipe. 



If well above the boiler, good results 

 could be obtained by means of three 

 2%-inch flow pipes, in which case thir- 

 teen 2-inch returns will be needed. Con- 

 nect four with each of the wall flows 

 and five returns with the ridge flow. 



DHDBDaaHDHaBaaaBDaaBnBDBnH 



^THE KROESCHELL 



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HOT WATER BOILER : 



Here is the boiler that la making the most wonderful greenhouse 

 heating record in the world. Florists and gardeners who ha\e 

 used other makes are constantly giving the KROESCHELL Green- 

 house Boiler the highest praise. 



3.974.605 square feet of glass was equipped with KROESCHELL 

 Boilers during 1916-1917. You will find the KROESCHELL in 

 every State in the Union and Canada. The supremacy of KROE- 

 SCHELL Boilers is proved by their country-wide adoption. 



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Every boiler made at our works is of the highest standard. Ma- 

 terial—governed by Kroeschell specifications— the best that money 

 and brains can produce. Workmanship— the kind that is an in- 

 spiration 10 all boiler makers. Boiler efficiency— determined by 

 actual tests under working conditions. Boiler ratings— honest 

 and true blue-guaranteed actual working capacities. 



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The superiority of our boilers has resulted in the removal and 

 abolishment of hundreds of sectional cast-iron boilers. In every 

 instance KROESCHELL BOILERS give more heat with the same 

 piping and with less fuel. 



WHEN YOU BUY- GET A KROESCHELL 



. KROESCHELL BROS. CO., 



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444 W. Erie Street 

 CHICAGO, ILL. 



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