

The Weekly Florists' Review. 



December 1, 1910. 



Montgomery County Coal Co. 



TAYLOR SPRINGS COAL 



COAL OF MERIT 



FISHER BUILDING, CHICAGO 



MentiOD The Review when you write. 



Greenhouse Heating. 



Winter will soon be here and the move- 

 ment of freight trains will be impeded by 

 cold. Already all the gondolas are in use 

 and soon there will be the annual cry of 

 car shortage. By the way, how much 

 coal have you got on the place? 



ADVANCE FBEIGHT ON COAL. 



For months the coal consumers of 

 Chicago have been fighting an advance 

 of 10 cents per ton in the freight on 

 coal from Illinois mines. November 29 

 the Illinois Eailroad and Warehouse 

 Commission, which has had the matter 

 under advisement, granted the railroads 

 the right to push up their charges 7 

 cents per ton and the new rates will go 

 into effect December 10. 



The result will be an advance of 7 

 cents or more per ton in the cost of all 

 fuel consumed in Chicago, including 

 that for the great greenhouse establish- 

 ments, for if Illinois coals cost more 

 the prices of the eastern coals will, of 

 course, be pushed up a corresponding 

 degree. _^___ 



SIZE OF EXPANSION TANK. 



Is it possible to have an expansion 

 tank too large for a hot water heater? 

 My boiler is rated for 900 feet of ra- 

 diation and I have a 4-barrel tank for 

 expansion. What ought to be the size 

 of the tank? F, G. 



There is no particular objection to 

 having a large expansion tank, although 

 nothing is gained by having an ex- 

 tremely large one. The size really 

 needed will depend upon the size of 

 the piping, as well as the water ca- 

 pacity of the boiler and the maximum 

 and minimum temperature of the water 

 in the system. The capacity of the 

 tank should be about twice the in- 

 creased volume of the water in the sys- 

 tem caused by its expansion when heat- 

 ed, thus providing an ample supply to 

 fill the pipes as the water cools. A 10- 

 gallon tank will generally answer for 

 900 feet of radiation. 



HELPS FOR THE CIECTDLATION. 



Heating systems are like newspapers 

 — they are ineffective if they do not 

 circulate. Because a good many heat- 

 ing systems, like some publications 

 the writei of this note has heard 

 about but knows not of, have only in- 

 termittent circulation, heating engi- 

 neers have given a great deal of atten- 

 tion lately to the development of de- 

 vices to remedy the difficulties. Of 

 late these devices have been largely 

 along the line of bringing the prin- 

 ciple of the vacuum to the aid of the 

 florist. The most recent apparatus of 

 this character to be tried in green- 

 houses is an automatic electric con- 

 densation pump manufactured by the 

 Chicago Pump Co. and said to be a 

 fuel saver wherever steam is the heat- 



No More Ruined Stock 



No More Sleepless Nights 



This little ADJUSTABLE THERMOSTAT 



does the work. Set the instrument at the 



minimum temperature wanted. It will 



ring a bell at the head of your bed when 

 that temperature is reached. 



Iioyd C. Bunch, of Fredonia. Kan., writes: "I have used this kind of Thermo- 

 stat four years and It has never failed. I set It at the minlmam temperature I want, 

 and iro to bed and sleep soundly until my belt at the head of my bed wakes me." 



Complete outfit, onl^ $2.5(r 



Includes Thermostat, alarm bell, 2 dry battery cells, 150 ft. insulated 

 wire, switch, tape and staples. Full instructions for installation with 

 each outfit. Anybody can put it up. 



Manhattan Electrical Supply Co. 



188 Fifth Ave., CHICAGO, ILL. 



Mention The Keview when you write. 



HARRISBlRG-rRANKLlN COAL CO. 



1816 FISHER BLD6., CHICAGO 

 The Better Grades ONLT of 



INDIANA AND ILLINOIS COALS 



Preparation and Quality as they should be. Write to-day tor Prices 



Mention The Review when you write. 



ing medium. The cut shows how the 

 apparatus looks. The manufacturer 

 says that "when a given quantity of 

 water enters the tilt receiving tank 

 it acts upon the automatic regulator 

 and starts the pump and motor, which 

 causes the water to be pumped from 

 this tank into the boiler. The pump- 

 ing of the water from the tank creates 

 a vacuum in it, which in turn draws 

 the condensation and air through the 

 coils and return pipes. This causes 

 hotter steam to be drawn through the 

 heating system, thus causing the radi- 

 ators to heat up quickly and also get- 

 ting hotter return water for the 

 boiler. ' ' 



A PABTITIONED HOUSE. 



Some time ago you were kind enough 

 to inform us through The Eeview re- 



SMITH, UNEAWEAVER & GO. 



COAL 



latkrMlts. BltsmlsoM. Coke ud Gaa Co«l 



TrSt&SSLt. Philadelphia 



Mention The Review when you wriU'. 



garding the piping of our greenhouse. 

 Unfortunately, however, you misunder- 

 stood the size, which of course rendered 

 the instructions useless. These are the 

 conditions: The house to be piped for 

 hot water is ten feet wide and fifty- 

 eight feet long, with a partition. One 

 part is forty feet long, three and one- 

 half feet high at the sides and six and 

 one-half feet at the ridge, and we wish 



Automatic Electrical Condensation Pump. 



