2IO 



TIMBER AND TIMBER TREES. 



[CHAP. 



TABLE CIX. 

 Tensile Experiments. 



TABLE CX. 

 Vertical or Crushing Strain on cubes of 2 inches. 



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, 



