THE GARDEN AND ITS ACCESSORIES 



coats in order not to crack or warp from 

 the effect of weather. The columns must 

 stand on a foundation of stone or cement, 

 otherwise the ground will cause a rapid 

 decay of the wood. The illustration on 

 page 51 shows one of this description. It 

 illustrates an effective use of columns and 

 pilasters of the Greek Doric order, and it 

 is a good example of the type of pergola 

 that is pleasing to look at, even though 

 not covered with vines. 



The following suggestions for the erec- 

 tion of a rustic wooden pergola (flat-arched 

 arbor) are recommended. Locust or red 

 cedar is the most durable wood ; but white 

 cedar, the second growth of white oak, 

 chestnut and larch are all suitable if the 

 posts are treated with a preservative mix-' 

 ture of creosote on the surface of all parts 

 that come in contact with the ground and 

 at the intersection of all posts and rafters 

 where moisture is likely to collect. To 

 54 



