OP: BOOKS. 



Oiitside of the "bulletins of Dr. A. D. Hopkins in 

 charge of forest insect investigations of the Bureau of 

 Entomology, very little haa been written applying to our 

 forest insects in District 5. For the information of For- 

 est officers who wish to go fiirther into the subject than 

 is given in this Maaual, the following books are recommended : 



The Genus Dendroctonus by A. D. Hopkins, Ph. D.- Technical 



Series No. 17, Pt . 1, U. 3. Department of Agriculture, 



Bureau of Entomology. 

 Bark Beetles of the Genus Dendrootonus by A. P. Hopkins, 



Ph. P.- Bulletin No. 83, Pt . 1, U. S. Department of 



Agriculture, Bureau of Entomology. 

 C on triVq-'- -oii3 To'v^rci a Ilonogr^ph of. the Bark-Weevils of 



the Genus Pissodes. by A. D, Hopkins, Ph. D.- Technical 



Series No. 20, Pt . 1, U. S. Department of Agriculture , 



Bureau of Entomology. 

 Some Insects Injurious to Forests ~by A. D. Hopkins, Ph. p.- 



Bulletin No. 58, Pt . 5, U. S. Department of Agriculture, 



Bureau of Entomology. 

 Forest Tree Diseases Common in California and Nevada by 



E. P. Meinecko. A Manual for Field Use. U. S. Department 



of Agriculture, Forest Service. 



-14- 



