62 GREENHOUSES 



with the clearing from the roof of ice and 

 snow in winter, has led to the adoption by 

 several firms, of the curved-eave construc- 

 tion. For small and medium-sized houses 

 the increase in light is very noticeable. In 

 larger houses it is not so apparent. The ex- 

 pense for glass is somewhat greater on ac- 

 count of the curved panes required. 



Circular Houses. These belong in a class 

 with the round barn and octagonal house 

 excellent in theory but impractical in use. 

 Their first cost and the expense in mainten- 

 ance places them without the range of econ- 

 omy as commercial houses. As ornamental 

 houses in parks and private places, and for 

 the growing of tall tropical plants they have 

 their place. 



