256 TIMBER AND TIMBER TREES. [chap. 
Table CXXXV. —Spruce (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. 
Inch. 
Inches. 
lbs. 
lbs. 
I 
1-25 
•06 
6-25 
696 
451 
926 
112-75 
2 
I '20 
•05 
5 '00 
719 . 
485 
890 
121-25 
3 
I’IS 
•04 
375 
556 
510 
654 
127-50 
4 
1-30 
•07 
575 
709 
490 
867 
122-50 
Total . 
4 ' 9 ° 
•22 
20-75 
2680 
1936 
3337 
484-00 
Average 
1-225 
•055 
[v 5-187 
670 
484 
834 
I2I - 00 
Remarks.— No. x broke with about 12 inches length of fracture ; 2, 3, and 4 with 
only a little less. 
Table CXXXVI. 
Tensile Experiments. 
(Dimensions of each piece, 2X2x3° inches, s.g. 484.) 
' 
No. 5. 
No. 6. 
No. 7. 
No. 8. 
Total. 
Average. 
Weight the piece ) 
broke with ) 
lbs. 
I 3» io 4 
lbs. 
19,040 
lbs. 
13,440 
lbs. 
17,360 
lbs. 
62,944 
lbs. 
15,736 
Direct cohesion on ) 
1 square inch ) 
3,276 
4,760 
3,360 
4,340 
15,736 
3,934 
Table CXXXVII. 
Vertical or Crushing Strain on cubes of 2 inches. 
No. 9. 
6 
d 
fc 
No. 11. 
No. 12 
No. 13. 
No. 14. 
Total. 
Average. 
Ditto on 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
inch. 
9-00 
8-875 
775 
8-875 
00 
Or 
875 
52-00 
8-666 
2-166 
E = 771800. S = 1759 - 
