XXXIV.] 



YELLOW PINE. 



TABLE CXLVIIL YELLOW PINE (CANADA). 



Transverse Experiments. 



REMARKS. The whole of these broke with a moderate length of fracture and splintery. 



The above-mentioned specimens were all of good 

 quality, well seasoned, and taken from trees of 6 to 8 

 feet in circumference. It will be observed that the 

 specific gravity and breaking strains varied only in a 

 slight degree. By the formulae 



E = 309240. 



S = 1645. 



Experiments were also made to test 

 the transverse strength of a series of 

 seven pieces (Table CXLIX.) cut from 

 a plank 2 inches thick, taken out of the 

 middle or centre part of the butt-end 

 of a tree, the centre piece O being 

 made to include the pith (Fig. 30). 



FIG. 30. 



