XIX.] 
CANADIAN OAK. 
109 
Table XLII. 
Tensile Experiments. 
Number 
of the 
specimen. 
Dimensions of 
each piece. 
Specific 
gravity. 
Weight the 
piece broke 
with. 
Direct 
cohesion on 
1 square inch. 
Inches. 
lbs. 
lbs. 
7 
] [ 
758 
19,600 
4,900 
8 
2 X 2 X 30 
736 
19,052 
4,763 
9 
734 
11,748 
2,937 
10 
> l 
738 
10,920 
2 , 73 ° 
Total . 
• 2966 
61,320 
15,330 
Average 
74 i ‘5 
15,330 
3,832 
Table XLII I. 
Vertical or Crushing Strain on cubes of 2 inches. 
No. n. 
No. 12. 
No. 13. 
No. 14. 
No. 15. 
No. 16. 
Total. 
Average. 
Ditto on 
1 square 
inch. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
IO75 
1075 
io ’5 
10-5 
IO‘5 
IOU25 
63-125 
IO-52I 
2-630 
E = 703230. S = 1897. 
THE CANADIAN OAK TREE ( Quercus Rubra). 
THIS tree is of perfectly straight growth, and yields the 
timber of commerce in logs varying from 25 to 50 feet 
in length by 12 to 24 inches square. 
The wood is brown in colour, has a fine straight clean 
grain, is somewhat porous, shrinks moderately without 
splitting, is easy to work, and stands well after seasoning. 
It is remarkable for its very slow growth. 
About 4,000 loads of this Canadian Oak timber are 
usually imported annually into London, and a far greater 
quantity into the Liverpool market, for the use of 
cabinet-makers and general dealers, who employ it for 
