60 



GREENHOUSES 



mercial way. Curved-roof houses are made 

 to use either curved or straight glass. 



Side-hill Houses. Mention has already 

 been made of one of the forms of this type 

 of house. Sometimes a modification of the 



Fig. 31. Diagram of a side-hill range 



ridge-and-furrow house is utilized for side 

 hill construction. Side-hill houses are not 

 recommended when well drained, level land 

 may be secured, because of the disadvantage 

 of working at different levels. 



Curved-eave Houses. The shade caused 

 by eave plates and gutters, the difficulty of 

 keeping them in repair and their interference 



