XXXIV. ] VELLOW PINE. 283 
And of the tensile : 
The pieces 1 and 1', s.g. 543, broke with 1,925 lbs. 
ae 2 29 2% a7 548, ay 2,510 ” 
3% 3 ” 3; ” 5595 ” 2,450 ” 
” 49> 45 2» 563, ” 2,152 ;, 
We find here that the denser layers are at 4 and 4’, 
near the outside of the log, but we are not sure as to the 
amount of wood removed in hewing it,so that it may 
perhaps compare with the specimens in Table CXLIX. 
as to position of growth. It will be seen that the point 
of greatest transverse strength is at or near 3 and 3',and 
that of the tensile at or near 2 and 2’. 
There is a marked difference in the strength of the 
wood on the two sides of this tree, since I, 2, 3, and 4 
have a mean transverse strength of 556, and 1’, 2’, 3’, and 
4! of 453 only, the difference being 103, or about 18 per 
cent. This is further remarkable in the tensile strength, 
since I, 2, 3, and 4 have a mean strength of 2599, and 
1’, 2', 3, and 4’ of 1920 only, the difference being 670, 
or about 26 per cent. 
TaBLe CLI. 
Tensile Experiments, 
Number Dimensions . Weight the Direct 
of the of care piece broke | cohesion on 
specimen. the pieces. BTAvIEY: with, 1 square in. 
4 
Inches. Ibs. Ibs, 
30 464 7,280 1,820 
37 2X 2x 30 444 7,840 1,960 
; 38 506 9,205 2,301 
| Total. . re 1414 24,325 6,081 
Average . oe | 471 8,108 | 2,027 
