66 



GREENHOUSES 



the side walls which close down against4t; 

 or as a glazing-sill when no side ventilating 

 sash are used and the glass is puttied directly 

 against it. Sills are used at the ends as well 

 as at the sides of the house. They are of 

 various sizes and forms, and may be of either 

 wood or iron. The small sills are now quite 

 popular. Grooves on the under side of the 

 wood sills prevent the water from running 

 back between the sill and the wall which 

 would thus cause decay. 



Eave Plate. This plate rests upon the side 

 posts and forms the support for the roof 

 members. It may be of either wood or iron. 



Fig. 35. Types of eave plates. A, B, C, and D are 

 wood; E is a metal plate 



Gutter. When it is desired to collect the 

 water from the roof, or when houses are con- 

 nected in the ridge-and-furrow system, it is 

 necessary to use a gutter instead of an eave 



