PUBLICATIONS fiELATING TO POKEST INSECTS. 99 



1900c. Hopkins, A. D.— The periodical cicada or seventeen-year locust in West 

 Virginia. A revision of Bui. 50, witli additional data relating to the 

 1898 and 1900 swarm. <Bu]. 68, W. Va. Agr. Exp. Sta., pp. 267-330, 

 flgs. 14, pis. 3, maps 9, September. 



1901o. Hopkins, A. D.— Insect enemies of the spruce in the Northeast. <Bul. 

 28, n. s., Div. Bnt, U. S. Dept. Agr., pp. 48, pis. 16, 56 orig. figs., 

 5 text flgs. 



19016. Hopkins, A. D — On the development and evolution of the scolytid gal- 

 lery. [Paper read before Section F, Amer. Assn. Adv. Sci., Denver, 

 Colo. (August).] Abstract published in Science. 



1901c. Hopkins, A. D. — On insects detrimental and destructive to forest prod- 

 ucts used for construction material. [Paper read at Denver Meet. 

 Amer. Assn. Econ. Ent. (August).] <Bul. 31, n. s., Div. Ent, U. S. 

 Dept. Agr., pp. 60-62. 



1901d. Hopkins, A. D. — Insect enemies of forests and forest products. [Paper 

 read at Denver Meet. Amer. Forestry Assn.] <The Forester, VIII, 

 pp. 250-254, 5 flgs. 



1902o. Hopkins, A. D. — Insect enemies of the pine in the Black Hills Forest 

 Reserve. <Bul. 32, n. s., Div. Ent, U. S. Dept. Agr., pp. 24, pis 7, 

 figs. 18, 5 text figs. 



19026. Hopkins, A. D. — On the study of forest entomology in America. <Bul. 

 37, n. s., Div. Ent, TJ. S. Dept. Agr. (Proc. 14th Ann. Meet. Assn. 

 Econ. Ent, pp. 5-28. Reprint iUd. 



1902c. Hopkins, A. D. — Some insect enemies of living trees. <Proc. 22d Ann. 

 Meet Soc. Prom. Agr. Sci., pp. 66-69. 



1902d. Hopkins, A. D. — The powder-post beetle. <Amer. Agriculturist, No- 

 vember 15 ; New England Homestead, November 1. 



1903o. Hopkins, A. D. — Some of the principal insect enemies of coniferous 

 forests in the United States. < Yearbook U. S. Dept Agr. for 1902, 

 pp. 265-282, flgs. 10, pis. 2. (Separate No. 268, Office of Secy, of Agr.) 



19036. Hopkins, A. D. — Forest insect explorations in the summer of 1902. 

 <Can. Ent, XXXV, pp. 59-61, March. 



1903c. Hopkins, A. D. — ^Powder-post injury to seasoned wood products. 

 <Cir. 55, Bur. Ent., U. S. Dept. Agr., pp. 5, fig. 1. 



1903(?. Hopkins, A. D. — Methods of work and some results in forest insect 

 investigations. <Proc. Assn. Agr. Colls, and Exp. Stas., pp. 180-182. 



1903e. Hopkins, A. D. — Insect enemies of the redwood. <Bul. 38, Bur. For- 

 estry, U. S. Dept. Agr., pp. 32^0, flgs. 4. 



1904o. Hopkins, A. D. — Catalogue of exhibits of Insect enemies of forests and 

 forest products at the Louisiana Purchase Exposition. <Bul. 48, 

 n. s., Div. Ent, U. S. Dept. Agr., pp. 56, pis. 22. 



19046. Hopkins, A. D. — Insect injuries to hardwood forest trees. <Yearbook 

 U. S. Dept. Agr. for 1903, pp. 313-328, flgs. 17, pi. 1. (Separate No. 

 327, Office of Secy, of Agr.) 



1905. Burke, H. E. — Black check in western hemlock. <Cir. 61, Bur. Ent, 

 U. S. Dept Agr., pp. 10, figs. 5. 



1905a. Hopkins, A. D. — Insect injuries to forest products. <Yearbook U. S. 

 Dept Agr. for 1904, pp. 381-598, figs. 14. (Separate No. 355, Office 

 of Secy, of Agr.) 



19056. Hopkins, A. D. — The Black Hills beetle, with further notes on its 

 distribution, life history, and methods of control. <Bul. 56, Bur. 

 Ent., U. S. Dept Agr., pp. 24, flgs. 6. 



