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92 



The Florists' Review 



June 26, 1919. 



Greenhouse Heating 



Subscribers are invited to .write the 

 Editor of thlfc Department with regard to 

 any details of greenhouse heating that 

 are not, understood. When information 

 ift 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. 



COAL MINERS LEAVE COUNTBY. 



Increased coal production is less' prob- 

 able than it was if it is true that ap- 

 proximately 1,300,000 aliens in the Unit- 

 ed States are planning to return to their 

 native countries. 



This estimate, while higher than pre- 

 vious ones, is declared by Ethelbert 

 Stewart, director of the investigation 

 and inspection service of the Depart- 

 ment of Labor, to be a conservative one. 

 It is based on investigations made re- 

 cently covering the steel mill districts 

 in the vicinity of Chicago, Detroit and 

 Pittsburgh, and the coal mining areas 

 of Pennsylvania. 



A large proportion of the foreigners 

 who intend leaving the United States 

 for the countries of their birth are em- 

 ployed in the coal mints. The mine la- 

 bor is composed entirely of immigrants 

 who have arrived rather recently on 

 our soil. With the ability to lay away 

 large savings in the last two years, 

 they have prepared themselves for re- 

 turn to the freed lands of Europe, where 

 the economic situation is such as to 

 make their future as full of opportunity 

 there as it would be here. 



This reversal of the flow of immigra- 

 tion will, in all probability, force the 

 price of all rough labor still higher. The 

 lesser skilled trades will have greater 

 difficulty in finding men. And the pres- 

 ent underproduction of coal is not likely 

 to be remedied — not, at any rate, in time 

 to help next winter's supply. Shortage 

 of fuel seems almost certain. 



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HOUSE AND ATTACHED HOTBED. 



Enclosed are plans of a greenhouse 

 which I built this spring. It is 20V2x50 

 and ten and one-half feet high to the 

 ridge, with sashbars twelve feet long. 

 The north wall is solid concrete and is 

 four and one-half feet high from ground 

 to eaves. The south side is the same 

 height, but contains eighteen inches of 

 glass. Attached to the south wall is a 

 hotbed. The hotbed sashes, which are 

 six feet long, connect with the lower 

 edge of the eighteen inches of glass in 

 the greenhouse wall. Under the eaves of 

 the hotbed sashes there is a concrete 

 wall eighteen inches high. Thus the en- 

 tire width of the structure, including 

 both house and hotbed, is twenty-six 

 feet. The wall at the west end of the 

 house is concrete to a height of three 

 feet; the rest is glass. The east end is 

 double-boarded, with paper between, up 

 to the eaves; the rest is glass. 



I have a No, 518 Lord & Burnham hot 

 water boiler, which has heated the old 

 houses satisfactorily. If I add two sec- 

 tions to the boiler, do you think it will 

 then heat the new house also to the tem- 

 perature required, or will three extra 



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'^The Boiler of Uneqaaled Fuel Economy" 



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KROESCHELL BOILERS have no bulky, 

 soot-accumulating surfaces - you avoid the 

 disagreeable work and trouble indispensable 

 to cleaning boilers with complicated and ' v» 



tortuous back and forth fire passages. 



The superiority of our boilers has resulted in the removal 

 and abolishment of hundreds of cast iron sectional boilers— in 

 every instance KROESCHELL BOILERS give more heat with 

 the same piping with less fuel. 



N-O-T C-A-8-T l-R-O- 



There is a Kroeschell 

 for every Kreenhouse 

 plant, be it large or 

 sniall. 



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The Kroeschell will 

 put high tempera- 

 tures into your heat- 

 ing lines. 



N-O-T C-A-8-T l-R-O-N 



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Rose Range of Riverbank Greenhouses, Certeva, III. Charles McCauley, Supt 



Heated by No. 15 Kroeschell Boiler. Kroeschell 2-incb Return Piping System and Kroeschell 

 Generator. Oreenhouses each 28 feet by 200 feet. Garland Construction. 



The mains are arr^nsed to take care of a future addition of 40,000 sq. ft. of grlass; 2-inch returns are 

 used throughout the entire ran^e and each 2-inch return line is controlled by 1-inch gate valve (strictly a 

 Kroeschell feature), insuring perfect control. It is a gravity job; the circulation is perfect, reaching the ex- 

 treme ends of range in fifteen minutes. The Kroeschell Generator (the high speed gear for hot water beat- 

 ing) is also used for this system. 



"Your No. 15 Kroeschell Boiler heats our entire range. We maintain a temperature of 

 60 degrees in our greenhouses, and this temperature is easily maintained even in the very 

 coldest weather. Your boiler has given entire satisfaction. It is the best and auickest 

 heater I have ever used or seen. I have found the boiler very economical in the use of fuel 

 and labor, as it is not necessary to use the best coal, and any labor will do for a fireman. 

 The Kroeschell Piping System with Generator works like a charm. When I want to sulphur, 

 I can beat the water up to 230 to 240 degrees a&d I get the same results as from steam. See- 

 ing Is believing— all Growers are invited to call. Any further information concerning boiler 

 and piping system will be gladly given. We had a large number of Florists at our place re- 

 cently, and they all thought we had the finest equipped plant In the business." 



THE RIVERBANK COMPANIES. 

 CHARLES McCAULEY. Vice-Pres. and Mgr. 



WHEN YOU BUY-GCT A KROESCHELL / 



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KROESCHELL BROS CO., 



444 W. Erie Street 

 CHICAGO, ILL. 



