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Gary, Austin. (9578) 



an interesting forestal operation. a profitable cutting on insect killed 



timber which will serve the double purpose of saving lumber and 



reducing the ravages of black-beetles. Forestry and Irrig. 9(3): 149- 



150. 1903. 



Chamberlin, W. J. (9579) 



fighting pine beetles with electricity. Timberman 21 (10) : 38 illus. 

 1920. 



Collingwood, G. H. (9580) 



protecting your trees against insects. Amer. Forests and Forest Life 35 : 

 649-652, illus. 1929. 



Cornell University Agricultural Experiment Station. (9581) 



the control of insect pests and plant diseases, Cornell Univ. Agr. Expt. 

 Sta. Bull. 283, rev.: [463J-500, illus. 1915. 



Craighead, F. C. (9582) 



direct sunlight as a factor in forest insect control. Ent. Soc. Wash. 

 Proc 22 : 106-08. 1920. 



(9583) 



HOPKINS HOST- SELECTION PRINCIPLE AS RELATED TO CERTAIN CERAMBYCID 



beetles. Jour. Agr. Research 22: 189-220. 1921. 

 — and St. George, R. A. (9584) 



A NEW TECHNIQUE IN TREE MEDICATION FOR THE CONTROL OF BARK BEETLES. 



Science 72 : 433-435. 1930. 

 Davis, [H. H.] (9585) 



EXTERMINATION OF INSECTS. COAST LUMBERMAN BELIEVES BURNING OVER PINE 



forests will prove an effective remedy. Amer. Lumberman 1983: 42. 

 1913. 



Detwiler, S. B. (9586) 



insect and disease control as a branch of forest protection. Yale Univ. 

 School Forestry Pub. 28 pp. 1929. 



Dunn, M. B. (9587) 



dusting the forest by aeroplane. Canad. Forest and Outdoors 25 (2) : 

 85-87, illus. 1929. 



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suggestions for prevention of sawyer beetle injury to fire-killed timber. 



Canada Lumberman 46 (15) : 133. 1926. 



Elliott, F. A. (9589) 



OREGON BOARD OF FORESTRY TO ASSIST IN CHECKING TREE INSECTS' RAVAGES. 



Timberman 12 (8) : 54. 1911. 



Evenden, J. C. (9590) 



spraying for control of forest insects. Timberman 26 (9) : 51, illus. 

 1925. 



Felt, E. P. (9591) 



engineering and insect control. N. Y. Forestry 9 (1) : 11-12. 1923. 



Graham, S. A. (9592) 



CONTROLLING INSECTS IN LOGS BY EXPOSURE TO DIRECT SUNLIGHT. JoUT. For- 

 estry 19 : 512-514. 1921. 



(9593) 



the fight on forest pests in lake states. Amer. Lumberman 2662 : 61-62, 



illus. 1926. 



(9594) 



ornithology and forest entomology. Mich. Acad. Sci. Papers 11 : 389^-397. 



1929. 



Green, F. J. (9595) 



how to combat injurious insects. Quart. Jour. Forestry 17 (4) : 208-224. 

 1923. 



