GREENHOUSES AND FRAMES 



325 



In other instances we have seen the conservatory set a little way 

 out from the house, and connected with the latter by means of a glass 

 corridor. Very beautiful results can be attained by planting vines 

 and training them under the roof glass. 



It should be mentioned that many of these greenhouses can be 

 used for the growing of Tomato or Melon crops, or for the raising of 

 early vegetables in the Spring, if that is thought desirable. 



Heating 



Amateurs' small greenhouses, such as the portable houses, 8 ft. 

 3 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 



This exemphfies 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 well have been converted into a conservatory, or one could have been 



attached 



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

 under each of the side benches, and these coils 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 merciu'y 

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

 and requires no more attention than an ordinary kitchen stove. 



