36 



Canadian Forestry Journal, Mar.-Apr., 1912. 



-if- 



[Courtesy "Sunshine." 



A Typical Lumberman's Camp. 



tions of the year have been l)y the 

 I)( ufJroctonus beetles on the pines, 

 spruce and Douglas fir of the North- 

 west and Pacific Coast and on the 

 pine of the Southern States. As 

 knowledge increases of the actual 

 losses of merchantable timber caused 

 principally by these beetles, it ap- 

 pears that former estimates have been 

 conservative and that these lieetles are 

 in fact one of the principal factors 

 in causing the enormous continued 

 waste of the most valuable tind)er re- 

 sources of the Rocky ^Mountains and 

 Pacific Coast regions and of the 

 Southern States.' 



What is true for the Rocky ^loun- 

 tain and Pacific Coast regions of the 

 United States is also undoubtedly true 

 for the corresponding regions in Can- 

 ada and likewise for the northern 

 forests of the Dominion. It is owing 

 to the fact that in Canada there has 

 not been given the attention to these 

 destroying agencies that their im- 

 portance demands that so little in- 

 formation on the subject has been 



acquired and their destiaictive powers 

 are so little realised. 



We are now endeavouring to obtain 

 all the information possible as to the 

 depredations of these bark beetles and 

 other forest insects, in order to be 

 able to investigate these destructive 

 factors thoroughly. The Division of 

 Entomology of the Federal De- 

 partment of Agriculture has been 

 strengthened by the appointment of 

 :\Ir. J. :M. Swaine. ^NLSc, B.S.A., for- 

 merly lecturer in Entomology at ]Mac- 

 douald College, Que., as Assistant 

 Entomologist, to devote his entire time 

 to the study of forest insects. "Sir. 

 Swaine 's extensive work and investi- 

 gations on the bark beetles have made 

 him one of the two chief authorities 

 on these insects in North America, 

 and he is now engaged in studying the 

 distribution of the various species of 

 bark beetles and their life-histories. 

 A thorough investigation of their life- 

 histories and habits is necessary, as 

 it is upon the facts so ascertained that 

 control measures are based. Different 



