XXXIV.] 
YELLOW PINE. 
279 
Table CXLVIII.— Yellow Pine (Canada). 
Transverse Experiments . 
Number 
of the 
specimen. 
Deflections. 
Total 
weight 
required 
to break 
each 
piece. 
Specific 
gravity. 
Weight 
reduced 
to 
specific 
gravity 
600. 
Weight 
required 
to break 
1 square 
inch. 
With the 
apparatus 
weighing 
390 lbs. 
After the 
weight 
was 
removed. 
At 
the crisis 
of 
breaking. 
Inches. 
Inches. 
Inches. 
lbs. 
lbs. 
1 
2 'OO 
175 
4 * 5 ° 
630 
424 
891 
I 57'5 
2 
2 "OO 
1-65 
5 '°° 
636 
432 
882 
159-0 
3 
2 'OO 
I -85 
470 
684 
464 
884 
171 -o 
4 
175 
1-65 
4 ' 5 o 
660 
444 
892 
165-0 
5 
2 '25 
2’00 
375 
552 
435 
761 
I 38-0 
6 
275 
2-10 
575 
598 
411 
873 
I 49-5 
Total . 
1275 
I I -oo 
28-00 
3760 
2610 
5183 
940-0 
Average 
2U25 
I '833 
4-66 
626*6 
435 
864 
I56-66 
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). 
