1()90 



Canadian Forestry Journal Maij, 1918 



of a belter ulilizalion of British 

 Columbia woods. Conferences held 

 with the bodies mentioned disclosed a 

 hearty desire on the part of all to co- 

 operate in every way possible with 

 the Ottawa Government so as to se- 

 cure the needed facilities with the 

 least possible delay. As a result, 

 Mr. Campbell was able to return 

 east on April 15 with a draft of a 

 comprehensive scheme for approval 

 by the Director of P'orestry at Ottawa 

 which will permit of certain wood- 

 testing data being available by the 

 end of May, by which time it is ex- 

 pected the new building being erected 

 by the British Columbia Government 

 at the University for laboratory pur- 

 poses will be ready for occupation 

 and at least partially eciuipped. 



C. A Great Gainer 

 evening of April 5, 



B. 



On the evening of April 5, Mr. 

 Campbell was the guest of the B. C. 

 Forestry Club, when about 40 lum- 

 bermen and others were present. 



"In British Columbia," said Mr. 



Campbell, "the study of timber is by 

 far the most important work that the 

 new laboratory can take up at this 

 lime. One of the prime factors is the 

 study of strength in its various 

 phases — strength in bending, strength 

 as regards shock, resistance, hardness, 

 tension stilTness, etc. ' The suitability 

 of timber for any particular purpose 

 cannot be judged iDy its characteris- 

 tics as shown by any of these factors 

 separately — they must be taken in 

 combination. For instance, Doug- 

 las fir is one of the strongest of woods 

 for its weight that we have, yet for 

 aeroplane construction it is not as 

 suitable as the much weaker wood 

 — spruce. The first series of tests 

 are necessarily on the pure wood— 

 i.e., the characteristically straight- 

 grained pieces. Without the know- 

 ledge to be derived from such teste it 

 is impossible to proceed with tests of 

 larger-sized material containing knots, 

 checks, and other defects. At Mon- 

 treal we have completed a study of 

 the characteristic strength of the 

 clear, straight-grained material of 



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CANADIAN FORESTRY JOURNAL 



206-207 Booth Building, Ottawa. 



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