PRINCIPLES OF AMERICAN FORESTRY. 



ISA 

 N^t* 



ra I 



73 



y strong, 

 -grained, 

 durable, 



Heavy, h 

 ugh, coarse 

 to split, d 

 sed in 

 agricultural 

 of wagon 

 rees, flou 

 ls, 

 erage 



, hard 

 gh, 

 to 



toug 

 cult 

 U 



of agr 

 hubs 

 dle-tre 

 barrels 

 cooper 



difficu 

 flexibl 



. 

 Used in manufacture 

 of agricultural implements, 

 hubs of wagon -wheels, axe- 

 handles, rims for bicycle- 

 wheels, and for bridge tim- 

 ber, railway ties, sills of 

 buildings. 



+ 



W 



g^P g 

 -3 & -J3 



.S-c 



