io2 TIMBER AND TIMBER TREES. [CHAP. xvn. 



I c < Passing now from Europe to America, it will be well 

 fr> described ihreeW. four of the most valuable kinds of 

 Oak which have been dealt with commercially and em- 

 ployed in this country. There are many others, spread 

 over that vast continent ; but, as they are little known 

 here and not likely to be required, they will be only 

 briefly noticed. 



