Other Current Literature 235 



Remedial Measures. By T. E. Snyder. Bulletin 94, Part II, 

 Bureau of Entomology. Washington, D. C. 1915. Pp. 85. 



Density of Wood Substance and Porosity of Wood. By F. 

 Dunlap. Reprint from Journal of Agricultural Research, De- 

 partment of Agriculture. Washington, D. C. "V'ol. II, No. 6, 

 September 21, 1914. Pp. 423-428. 



Third Annual Report of the Kennebec Valley Protective Asso- 

 ciation. Maine. 1915. Pp. 15. 



At the end of the third year this association has 29 members, 

 whose timberland holdings total 1,245,900 acres. During the past 

 season the loss from fire was very small, and all fires that occurred 

 were promptly reported and quickly got under control, although 

 the average rainfall was considerably below normal. 



1 

 Maine Aphids of the Rose Family. By Edith M. Patch. Bulle- 

 tin 233, Maine Agricultural Experiment Station. Orono, Me. 

 1915. Pp. 250-280, ill. 



Gives descriptive accounts with drawings of the plant lice found 

 in Maine upon members of the rose family, including such genera 

 as Amelanchier, Crataegus, Prunus and Pyrus, and suggests 

 methods for their control. 



Eleventh Annual Report of the State Forester of Massachu- 

 setts, 1914. By F. W. Rane. Public Document 73. Boston. 

 Pp. 111. 



Electrical Injuries to Trees. By G. E. Stone. Bulletin 156, 

 Agricultural Experiment Station. Amherst, Mass. 1914. 

 Pp. 19. 



This bulletin is a revision of Bulletin 91, Injuries to Shade 

 Trees by Electricity, issued in 1902 and now out of print. It 

 deals with electrical injuries to trees, including a brief discussion 

 of the electrical resistance in trees, as well as the defects of alter- 

 nating and direct currents, lightning and earth discharge. The 

 methods of preventing injury to trees are also discussed. 



