INSECTS. 175 



Hopkins, Andrew Delxnar. Powder post injury to seasoned wood prodwi-. 

 5 p. illun. 8. Washington, 1903. (U. S. Dept. of agriculture Division of 

 entomology. Circular 55) Agr 9 3068 



Hopkins, Andrew Delmar. Practical information on the scolytid beetles of 

 North American forests. I. Barkbeetles of the genus Dendroctonus. 169 p. illus., 

 2 pi. 8. Washington, 1909* (U. S. Dept. of agriculture Bureau of entomology. 

 Bulletin 83, pt. 1) .\ K r9 2403 



General bibliography. 



Hopkins, Andrew Delmar. Preliminary report on the insert enemies of forests 

 in the northwest; an account of the results gained from a reoonnoissanee trip made 

 in the spring and early summer of 1899. 27 p. 8. Washington, 1899. (U. S. 

 Dept. of agriculture Division of entcunology. Bulletin, new ser., 21) Agr9 2956 



Hopkins, Andrew Delmar. Some insects injurious to forests. Additional data 

 on the locust borer. (In U. S Dept. of agriculture Bureau of entomology. Bul- 

 letin 58, p. 31-40. 8. Washington. 1907) Ajn-7 1214 



"Comprises a partial revision of part 1 of Bulletin no. 58, and additional information.'' 



Hopkins, Andrew Delmar. Some insects injurious to forests. Insect depreda- 

 tions in North American forests and practical methods of prevention and control. 

 (In U. S. Dept. of agriculture Bureau of entomology. Bulletin 58, p. 57-101. 8. 

 Washington, 1909) A gr 9 3103 



Bibliography: p. 96-101. 



Hopkins, Andrew Delmar. Some insects injurious to forests. The locust borer. 

 (In U. S. Dept. of agriculture Bureau of entomology. Bulletin 58, p. 1-16. illus., 

 pi. 8. Washington, 1906) Agr 61151 



Publications relating to the locust borer: p. 15-l(i. 



Hopkins, Andrew Delmar. Some of the principal insect enemies of coniferous 

 forests in the United States. (In U. S. Dept. of agriculture. Yearbook, 1902. 

 p. 265-282. illus. ,2 pi. 8. Washington, 1903) Agr 7-944 



Hopkins, Andrew Delmar. The white-pine weevil [Pissodes strobi] 8 p. 

 illus. 8. [Washington] 1907. (U.S. Dept. of agriculture Bureau of e'ntomology. 

 Circular 90) Agr 71915 



Howard, Leland Ossian. General work against insects which defoliate shade 

 trees in cities and towns. 4 p. 8. Washington, 1896. (U. S. Dept. of agricul- 

 ture Division of entomology. Circular, ser. 2, no. 15) Agr 92996 



"In advance from an article entitled: 'The shade-tree insect problem in the eastern United States' to 

 be published in the Yearbook of the Department for 1895." 



Howard, Leland Ossian. Shade-tree insect problem in the eastern United 

 States. (In U. S. Dept. of agriculture. Yearbook, 1895. p. 361-384. illus. 8. 

 Washington, 1896) Agr 7 729 



Howard, Leland Ossian. Three insect enemies of shade trees. 29 p. illus. 8. 

 Washington, 1899. (U. S. Dept. of agriculture. Fanners' bulletin 99) Agr 7 179 



Reprinted, with some annotations by the author, from the Yearbook of the Department of agriculture 

 for 1895. 



International society of arboriculture. Special Rocky Mountain bulletin. 

 illus. 4. Denver, 1902. 

 CONTENTS. Brown, J. P. Destructive bark beetles of the Finns ponderosa. Birds and the forests. 



Judeich, Johann Friedrich, and Nitsche, Heinrich. Lehrbucli der mittel- 

 europalschen forstinsektenkunde; als 8. aufl. von J. T. C. Ratzeburg Die waldver- 

 derberund ihrefeiude, in vollstandiger umarbeitung. 2 v. illus. 8. Wien, 1895. 



Dates of publication of separate parts: v. 1. abt. 1, 18S5; abt. 2, 1889; abt. 3, 1893; v. 2, abt. 4, 1895. 



