46 BULLETIN 1490, U. S. DEPARTMENT OF AGRICULTURE 



(34) Hopkins. A. D.. and Snyder, T. E. 



1917. POWDER-POST DAMAGE BY LYCTUS BEETLES TO SEASONED HARDWOOD. 



U. S. Dept. Agr. Farmers' Bui. ITS. 20 p., illus. 



(35) and Snyder, T. E. 



1921. powder-post damage to timber and wood products. Engin. News- 

 Rec.87: 269-271, illus. 



(36) Hubbard, H. G. 



1897. the ambrosia beetles of the united states. U. S. Dept. Agr., 

 Div. Ent. Bui. (n. s.) 7:9-30, illus. 



(37) Hubert, E. E. 



1921. notes on sap stain fungi. Phytopathology 11 : 214-224. illus. 



(38) 



1922. some wood stains and their causes. Hardwood Rec 52 (Hi : 



17-19. illus. 



(39) Ivory, E. P.. White. D. G.. and Upson. A. T. 



1923. STANDARD GRADING SPECIFICATIONS FOR YARD LUMBER AS RECOM- 



MENDED BY THE DEPARTMENT OF AGRICULTURE. U. S. Dept. Agr. 



Circ. 296. 75 p.. illus. 



(40) Loughborough, W. C, and Hubert, E. E. 



1924. problems in the seasoning of southern hardwoods. South. 



Lumberman 117 (1525) : 170-174, illus. 



(41) St. George, R. A. 



1924. SOUTHERN PINE BEETLE AND OTHER INSECT ENEMIES OF SOUTHERN 



forests. Lumber Trade Jour. 86 (9) : 37-38. 



(42) SCHRENK, H. VON. 



1903. THE " BLUING " AND THE " RED ROT " OF THE WESTERN YELLOW PINE, 

 WITH SPECIAL REFERENCE TO THE BLACK HILLS FOREST RESERVE. 



U. S. Dept. Agr., Bur. Plant Indus. Bui. 36, 40 p., illus. 



(43) Snyder, T. E. 



1916. EGG AND MANNER OF OVTPOSITION OF LYCTUS PLANICOLLIS. Jour. 



Agr. Research 6: 273-276. illus. 



1922. INSECT INJURY TO GREEN LOGS AND LUMBER AND METHODS OF PRE- 

 VENTING this loss. South. Lumberman 108 (1422) : 133-135, 

 illus. 



1923. CLOSER UTILIZATION HELPS CONSERVE OUR FORESTS INSECT DEFECTS. 



South. Lumberman 113 (1473) : 131-134, illus. 



(44) 



(45) 



(46) ■ 



1923. HIGH TEMPERATURES AS A REMEDY FOR LYCTUS POWDER-POST BEETLES. 



Jour. Forestry 21: 810-814. 



(47) and St. George. R. A. 



1924. DETERMINATION OF TEMPERATURES FATAL TO THE POWDER-POST 



BEETLE, LYCTUS PLANICOLLIS LECONTE, BY STEAMING INFESTED 



ash and oak lumber in a kiln. Jour. Agr. Research 2S : 

 1033-1038. illus. 



(48) Swaine, J. M., Craighead, F. C, and Bailey, I. W. 



1924. STUDIES on the spruce budworm [cacoecia fumiferana clem.] 

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



(49) Thelen, R. 



1923. kiln drying handbook. U. S. Dept. Agr. Bui. 1136. 64 p.. illus. 



(50) Webb. J. L. 



1909. the southern pine sawyer. U. S. Dept. Agr.. Bur. Ent. Bui. 58, 

 pt. 4, p. 41-56, illus. 



(51) 



1911. injuries to forests and forest products by roundheaded borers. 

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





