193 



with grazing, tends to make seedling reproduction rare. Insect damage 

 is large among all trees in this type of growth, especially the blackjack, 

 which is rarely sound. The trees which have been injured by fire are 

 more subject to attack than the others. 



This type often mingles with the oak-hickory type, and a transition 

 zone mixture results, which has the characteristics of both in modified 

 form. 



