26 MISC. PUBLICATION 74, U. S. DEPT. OP AGRICtTLTUKE 



(56) Peirson, H. B. 



1921. THE LIFE HISTORY AND CONTROL OF THE PALES WEEVIL (HYLOBIUS 



pales). Harvard Forest Bui. 3. 33 p.. illus. 



(57) 



1927. CONTROL OF THE BRONZE BIRCH BORER BY FOREST MANAGEMENT. 



Jour. Forestry 25 : 68-72. 



(58) St. George, R. A. 



1925. THE recent death of large quantities of southern pines. 



Amer. Lumberman ( whole No. ) 2607 : 50-51, illus. 



(59) Slingerland, M. V. 



1906. the bronze birch borer : an insect destroying the white birch. 

 N. Y. Cornell Agr. Expt. Sta. Bui. 234, p. [65] -78, illus. 



(60) Snyder, T. E. 



1915. insects injurious to forests and forest products, biology of 

 the termites of the eastern united states, with preventive 

 and remedial measures. U. S. Dept. Agr., Bur. Ent. Bui. 94, 

 pt. 2, 95 p., illus. 



(61) 



1926. PREVENTING DAMAGE BY LYCTUS POWDER-POST BEETLES. U. S. Dept. 



Agr. Farmers' Bui. 1477, 12 p., illus. 



(62) 



1927. DEFECTS IN TIMBER CAUSED BY INSECTS. U. S. Dept. Agr. Bui. 1490. 



47 p., illus. 



(63) Swaine, J. M. 



1918. CANADIAN BARK BEETLES. II. A PRELIMINARY CLASSIFICATION WITH 

 AN ACCOUNT OF THE HABITS AND MEANS OF CONTROL. Canada 



Dept. Agr. Ent. Branch Bui. 14 (pt. 2), 143 p., illus. 



(64) Craighead. F. C, and Bailey. I. W. 



1924. STUDIES ON THE SPRUCE BUD WORM. (CACOECIA FUMIFERANA CLEM.). 



Canada Dept. Agr. Ent. Branch Bui. (n. s.) 37, 91 p., illus. 



(65) Swenk, M. H. 



1927. THE PINE TIP MOTH IN THE NEBRASKA NATIONAL FOREST. Nebl\ Agr. 



Expt. Sta. Research Bui. 40, 50 p., illus. 



(66) Trimble, F. M. 



1924. LIFE HISTORY AND HABITS OF TWO PACIFIC COAST BARK BEETLES. 



Ann. Ent. Soc. Amer. 17: 382-[391], illus. 



(67) Webb, J. L. 



1909. SOME INSECTS INJURIOUS TO FORESTS. TV. THE SOUTHERN PINE 



sawyer. U. S. Dept. Agr., Bur. Ent. Bui. 58, pt. 4, p. 41-56, illus. 



(68) 



1911. INJURIES TO FORESTS AND FOREST PRODUCTS BY ROUNDHEADED BOREBSv 



U. S. Dept. Agr. Yearbook 1910 : 341-358, illus. 



ADDENDA 



Most of the papers cited below were published subsequent to the preparation 

 of this one. 



(69) Allison, J. H., and Orr, L. W. 



1929. a new menace to scotch and jack pine. Jour. For. 27 : 821-824. 



(70) Annand, P. N. 



1928. A contribution toward a monograph of THE ADELGINAE (PHYLLOX- 



eridae) of north America. Stanford Univ. Pubs., Biol. Sci. 

 vol. 6, no. 1, 146 p. 



(71) Busck, A. 



1915. THE EUROPEAN PINE-SHOOT MOTH ; A SERIOUS MENACE TO PINE TIM- 

 BER in America. U. S. Dept. Agr. Bui. 170, 11 p., illus. 



(72) Division of Forest Insect Investigations, bureau of entomology. 



1927. the relation of insects to slash disposal. U. S. Dept. Agr. f" 

 Dept. Circ. 411, 12 p. W 



(73) Friend, R B. 



1926. THE SPRUCE GALL APHID (ADELGES ABIETIS L.) AND ITS CONTROL. 



Conn. Agr. Expt. Sta. Rpt. Bui. 285, p. 223-228. 



(74) 



1927. THE BIOLOGY OF THE BIRCH LEAF SKELETONIZER BUCCALATRIX CAN- 



adensisella, chambers. Conn. Agr. Expt. Sta. Bul. 288 : [395]- 

 486, illus. 



