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GARDEN GUIDE 



Heating. — Amateurs' small greenhouses, such as the portable 

 houses, 8 ft. 8 in. wide and 12 ft. to 20 ft. long, are invariably heated 

 , by hot water. The boiler is what is known as a Junior, and is usually 

 placed in a cellar or put at one end of the house. Coils of 2-in pipe are 

 placed under each of the side benches, and these coUs are connected 

 to the boiler. There is a small open expansion tank at the end of the 

 coils to fill the apparatus with water and take care of the expansion of the 

 water in the system. The amount of radiation in the coils is generally 

 proportioned for a temperature of 60 deg. at night'^when the mercury 



This exemplifies the beauty and value of a few choice, neat growing evergreens 

 close to the house. Dwarf evergreens are also used for filling the window boxes. 

 The sun parlor might weU have been converted into a conservatory, or one 

 could have been attached 



outside is at zero. The boiler is a very compact and efficient heater 

 and requires no more attention than an ordinary kitchen stove. 



A greenhouse 18ft. x 25ft. has usually three benches, (two side 

 benches and one center bench) and is heated by coils of pipes placed 

 under the side benches only, leaving the space under centre bench 

 free so that bulbs or roots of various kind can be stored there. Hot 

 water is invariably used for heating, as the boUer requires a great deal 

 less attention and a more even temperature can be maintained than if 

 steam is used. The usual temperature is 55 to 60 deg. but the coils 

 are arranged and valved so that the temperature can be controlled. 



