OTTAWA, February 14, 1917. 



To the Honourable, 



The Minister of Agriculture, 

 Ottawa, Ont. 



SIR, I have the honour to submit for your approval Entomological Bulletin 

 No. 14 entitled "Canadian Bark-beetles; Part I: Description of New Species," 

 which has been written by Mr. J. M. Swaine, Assistant Entomologist in charge 

 of Forest Insect Investigations. 



The Bark-beetles constitute the chief insect enemies of our coniferous 

 forests, and it is impossible to give even an approximate estimate of the enormous 

 annual loss caused by their depredations throughout Canada. Much of the 

 dead timber whose destruction is attributed to fire is the result of outbreaks of 

 bark-beetles; this is particularly true in British Columbia. In consequence of 

 their great economic importance, Mr. Swaine has been devoting the greater 

 part of his attention for a number of years to a study of the species of bark- 

 beetles, their life-histories and bionomics. We are now in a position to com- 

 mence the publication of the practical and scientific results of these investiga- 

 tions, and it is proposed to issue them in a short series of bulletins, of which 

 the present is the first part. 



There is a constant demand on the part of practical lumbermen, foresters, 

 and others for the practical and scientific information that this series of bulletins 

 will contain, and their publication and distribution will materially assist in the 

 efforts that are now being made to conserve our forests. 



I have the honour to be, sir, 



Your obedient servant, 



C. GORDON HEWITT, 



Dominion Entomologist. 



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