594 JOURNAL OF FORESTRY 



Canadian Bark-bcctles. By J. M. Swaine, Canadian Department of 

 Agriculture. Bulletin 14. Pp. 32. 191 7. 



The Canadian Division of Entomology has been quite active in the 

 study of the forest-insect problem of the Dominion. Inasmuch as in 

 a number of important cases the Canadian infestations are similar to 

 our own, American foresters should be interested in the work Mr. 

 Swaine is doing in Canada in forest-insect protection. 



The Dominion Entomologist prefaces Air. Swaine's bulletin with the 

 following brief statement of the importance and status of the forest- 

 insect problems in Canada : 



"The bark-beetles constitute the chief insect enemies of our coniferous for- 

 ests, 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 commence the pub- 

 lication of the practical and scientific results of these investigations, and it is 

 proposed to issue them in a short series of Inilletins, of which the present is the 

 first part." 



In his bulletin Mr. Swaine describes about fifty new species of bark- 

 beetles, a number of which have been found to occur in various parts 

 of the United States. 



A few years ago. under the same authorship, "Forest Insect Con- 

 ditions in British Columbia" was published by the Canadian Depart- 

 ment of Agriculture (Entomological Bulletin Number 7). Foresters 

 in the Rocky Mountain and Pacific Coast region will find this publica- 

 tion of considerable value, especially since the insect enemies of western 

 yellow pine, western white pine, Douglas fir, lodgepole pine, and Sitka 

 spruce discussed for British Columbia are identical with the one with 

 which American foresters are concerned. The description of control 

 methods and the imderlying economic considerations make this pub- 

 lication doubly valuable. 



A. J. JaFnickE. 



Report of the Director of Forestry for flic Year 10 1/. (Part VI, 

 Annual Report. Department of the Interior. ) By R. H. Campbell. 

 Ottawa. Canada. 1918. Pp. 81. 



Although by enlistments the Forestry Branch lost 65 of its employees 

 of all ranks. 36 of its permanent staff of 265. the activities of the Serv- 



