IMPORTANT NORTH AMERICAN" FOREST INSECTS 25 



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1912. THE LARGE LARCH SAWFLY [NEMATUS ERICHSONIl] WITH AN ACCOUNT 

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1915. the huisache girdler. U. S. Dept. Agr. Bui. 184, 9 p., illus. 



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1920. THE ASPEN BORER AND HOW TO CONTROL IT. U. S. Dept. AgT. 



Farmers' Bui. 1154, 11 p., illus. 



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



Yearbook 1903: 313-328, illus. 



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

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mo., 1904. U. S. Dept. Agr., Div. Ent. Bui. 48, 56 p., illus- 



1907. THE LOCUST BORER AND METHODS FOR ITS CONTROL. U. S. Dept. AgT., 



Bur. Ent. Circ. S3, 8 p., illus. 



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

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S. Dept. Agr., Bur. Ent. Bui. 83, pt. 1, 169 p., illus. 



1912. THE DYING HICKORY TREES '. CAUSE AND REMEDY. U. S. Dept. Agr., 



Bur. Ent. Circ. 144, 5 p., illus. 



(44) Houses, J. S. 



1918. DESTRUCTIVE INSECTS AFFECTING OHIO SHADE AND FOREST TREES. 



Ohio Agr. Expt. Sta. Bui. 332, p. 161-187, illus. 



(45) Howard. L. O., and Chittenden, F. H. 



1916. THE LEOPARD MOTH : A DANGEROUS IMPORTED INSECT ENEMY OF SHADE 



trees. U. S. Dept. Agr. Farmers' Bui. 708, 12 p., illus. 



(46) Keen, F. P. 



1929. insect enemies of California pines and their control. Calif. 

 State Dept. Nat. Resources. Forestry Div. Bui. 7. 113 p., illus. 



(47) Korsttan. C. F. 



1927. FACTORS CONTROLLING GERMINATION AND EARLY SURVIVAL IN OAKS. 



Yale Univ. School Forestry Bui. 19, 115 p., illus. 



(48) Kotinsky, J. 



1921. INSECTS INJURIOUS TO DECIDUOUS SHADE TREES AND THEIR CONTROL. 



U. S. Dept. Agr. Farmers' Bui. 1169, 100 p., illus. 



(49) Middleton, W. 



1921. leconte's sawfly, an enemy of young pines. Jour. Agr. Research 

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(50) Miller, J. M. 



1914. insect damage to the cones and seeds of pacific COAST CONIFERS. 



U. S. Dept. Agr. Bui. 95, 7 p., illus. 



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1915. CONE BEETLES: INJURY TO SUGAR PINE AND WESTERN YELLOW PINE. 



U. S. Dept. Agr. Bui. 243, 12 p., illus. 



(52) Milliken, F. B. 



1916. the cottonwood borer. U. S. Dept. Agr. Bui. 424. 7 p., illus. 



(53) Packard, A. S. 



1890. THE FIFTH REPORT OF THE UNITED STATES ENTOMOLOGICAL COMMIS- 

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1921. the life history of recurvaria millerl the lodgepole pine 

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1923. PINE DEFOLIATION ON THE KLAMATH RESERVATION. Timbemian 24 



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