CHAP. XXXV.] 



PITCH PINE. 



287 



the planks in thickness varying from 3 to 5 inches by 10 

 to 1 5 inches in width, and from 20 to 45 feet in length. 

 Pitch Pine is extensively employed in ship-building for 

 beams, shelf, and bottom planking, &c., &c., and also in 

 civil architecture wherever long, straight, and large 

 scantlings are needed. It will not, however, make good 

 board for joiners' general purposes, although we find it is 

 used to some extent for cabinet work. 



The wood is of a reddish- white colour, clean, hard, 

 rigid, highly resinous, regular and straight in the grain, 

 and, compared with most other Pines and Firs, is rather 

 more difficult to work ; it is good in quality, and con- 

 sidered to be durable. The principal defects in Pitch 

 Pine are the heart and cup shake, the latter often 

 extending a long way up the tree. Hence, as far as 

 possible, logs having these defects should be used in large 

 scantlings, to guard against a waste of wood near the 

 centre. 



TABLE CLIII. PITCH PINE (AMERICAN). 

 Transverse Experiments* 



REMARKS. All the specimens broke with a short fracture. 



E = 859950. S = 2754. 



