210 
TIMBER AND TIMBER TREES. [chap. 
Table CIX. 
Tensile Experiments. 
Number 
of the 
specimen. 
Dimensions 
of 
the piece. 
Specific 
gravity. 
Weight the 
piece 
broke with. 
Direct 
cohesion on 
1 square inch. 
3 
Inches. 
2 X 2 X 30 
750 
lbs. 
15,120 
lbs. 
3,7So 
Table CX. 
Vertical or Crushing Strain on ales of 2 inches. 
No. 4. 
No. 5. 
No. 6. 
No. 7. 
Total. 
Average. 
Ditto on 
1 square 
inch. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
Tons. 
13’ 
12' 
I2'25 
I2’5 
4975 
12-4375 
3‘ io 94 
E = 573100. S = 2263. 
THE CANADIAN ASH TREE (. Fraxinus) 
attains moderate dimensions, and yields the timber of 
commerce in logs varying from 20 to 40 feet in length, 
by from 10 to 16 inches square. Oar rafters are also 
produced from it, and until quite recently considerable 
quantities were brought to this country. These rafters are 
pieces roughly shaped to the form of oars, and reduced 
to a minimum of size, to lessen, as far as possible, the cost 
of freight. 
The wood is reddish-brown in colour, and con¬ 
siderably darker than the English Ash. It is plain and 
straight in the grain, moderately hard and heavy, tough, 
