DEFECTS IN TIMBER CAUSED BY INSECTS 45 



(14) Craighead, F. C, and Loughborough, W. K. 



1921. TEMPERATURES FATAL TO LARV.E OF THE RED-HEADED ASH BORER AS 

 APPLICABLE TO COMMERCIAL KILN DRYING. JoUT. Forestry 19 I 



250-254. 



(15) Graham, S. A. 



1918. THE CARPENTER ANT AS A DESTROYER OF SOUND WOOD. Minn. State 



Ent. Rpt. 17: 32-40, illus. 

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(18) 



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(20) 



1920. FACTORS INFLUENCING THE SUBCORTICAL TEMPERATURES OF LOGS. 



Minn. State Ent. Rpt. 18 : 26-42, illus. 



1921. CONTROLLING INSECTS IN LOGS BY EXPOSURE TO DIRECT SUNLIGHT. 



Jour. Forestry 19 : 512-514. 



1922. EFFECT OF PHYSICAL FACTORS IN THE ECOLOGY OF CERTAIN INSECTS 



in logs. Minn. State Ent. Rpt. 19 : 22-40. 



1924. TEMPERATURE AS A LIMITING FACTOR IN THE LIFE OF SUBCORTICAL 



insects. Jour. Econ. Ent. 17 : 377-383. 



1925. THE FELLED TREE TRUNK AS AN ECOLOGICAL UNIT. Ecology 6 I 397- 



411, illus. 

 (21) Greene, C. T. 



1914. the cambium miner in river birch. Jour. Agr. Research 1: 

 471-474, illus. 



(22) 



1917. two new cambium miners (DiPTERA). Jour. Agr. Research 10: 

 313-318, illus. 

 (23) Hopkins, A. D. 



1894. defects in wood caused by insects. W. Va. Agr. Expt. Sta. Bui. 

 35, p. 291-306, iUus. 



(24) 

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1894. black holes in wood. W. Va. Agr. Expt. Sta. Bui. 36, p. 313-336, 

 illus. 



1904. INSECT INJURIES TO HARDWOOD FOREST TREES. U. S. Dept. Agr. 



Yearbook 1903 : 313-328, illus. 



1904. CATALOGUE OF EXHIBITS OF INSECT ENEMIES OF FORESTS AND FOREST 

 PRODUCTS AT THE LOUISIANA PURCHASE EXPOSITION, ST. LOUIS, 



mo., 19 04. U. S. Dept. Agr., Div. Ent. Bui. 48, 56 p., illus. 



1905. insect injuries to forest products. TJ. S. Dept. Agr. Yearbook 

 1904: 381-398, illus. 



1907. PINHOLE INJURY TO GIRDLED CYPRESS IN THE SOUTH ATLANTIC AND 



gulf states. U. S. Dept. Agr., Bur. Ent. Circ 82, 4 p., illus. 



1909. PRACTICAL INFORMATION ON THE SCOLYTID BEETLES OF NORTH AMERI- 

 CAN FORESTS. I. BARKBEETLES OF THE GENUS DENDROCTONUS. 



U. S. Dept. Agr., Bur. Ent. Bui. S3, pt. 1, 169 p., illus. 



1909. INSECT DEPREDATIONS IN NORTH AMERICAN FORESTS AND PRACTICAL 

 METHODS OF PREVENTION AND CONTROL. U. S. Dept. Agr., Bur. 



Ent. Bui. 58, pt. 5, p. 57-101. 



1910. INSECT INJURIES TO THE WOOD OF DYING AND DEAD TREES. TJ. S. 



Dept. Agr., Bur. Ent. Circ. 127, 3 p. 



1910. insect injuries to forest products. TJ. S. Dept. Asrr., Bur. Ent. 

 Circ. 128, 9 p. 



1912. DAMAGE TO THE WOOD OF FIRE-KILLED DOUGLAS FIR, AND METHODS OF 

 PREVENTING LOSSES. IN WESTERN WASHINGTON AND OREGON. TJ. S. 



Dept. Agr., Bur. Ent. Circ. 159, 4 p. 



