40 SOME INSECTS INJURIOUS TO FORESTS. 



the borer and are otherwise vigorous and healthy. From a well-estab- 

 lished principle in the heredity of plants and animals, this practice of : 

 propagating- from the best examples must certainly \'ield better results | 

 than would follow a disregard of the character of the trees from which j 

 seed or root propagations are made. | 

 For reference to literature, and other information not included in ] 

 this paper, the reader is referred to Part 1 of this bulletin, pages i 

 1 to 16. \ 



o \ 



