52 
BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
637. Johnson, W. G. Answers to queries and notes on insects inju¬ 
rious in mills. XXIII. <Amer. Miller, 1 November, 1898, 
1 fig. 
Treats of the Hessian fly. 
638. Johnson, W. G. Preliminary notes upon an important peach 
tree pest. <Entom. News, December, 1898, p. 255. 
Note on phytoptid injury. 
639. Johnson, W. G. Spraying apparatus. <The Ruralist, Jan¬ 
uary, 1899, 4 tigs. 
640. Johnson, W. G. Answers to queries and notes on insects inju¬ 
rious in mills. XXIV. <Amer. Miller, 1 June, 1899, p. 
463. 
641. Johnson, W. G. The Mediterranean flour moth again. <Can. 
Entom., June, 1899, p. 143. 
642. Johnson, W. G. Answers to queries and notes on insects inju¬ 
rious in mills. XXV. <Amer. Miller, September, 1899, pp. 
612-613. 
643. Johnson, W. G. Seven new localities for the Mediterranean 
flour moth, Ejphestia huehniella. <Entom. News, September, 
1899, p. 207. 
644. Johnson, W. G. The pea louse; a new and destructive species 
of the genus Nectarophora. <Sci. Amer., 18 November, 
1899, p. 325, 3 figs. 
645. Johnson, W. G. The Emory fumigator; a new method for 
handling hydrocyanic-acid gas in orchards. <Bull. No. 
20, n. s., Div. Ent., U. S. Dept. Agric., November, 1899, pp. 
43-45. 
646. Johnson, W. G. Miscellaneous entomological notes. <Bull. 
No. 20, n. s., Div. Ent., U. S. Dept. Agric., November, 1899, 
pp. 62-68. 
647. Johnson, W. G. The destructive pea-louse: a new and impor¬ 
tant economic species of the genus Nectarophora. <Bull. 
No. 20, n. s., Div. Ent., U. S. Dept. Agric., November, 1899, 
pp. 94-98. 
Account of Nectarophora destructor. 
648. Johnson, W. G. The stalk worm: a new enemy to young 
tobacco. <Bull. No. 20, n. s., Div. Ent., U. S. Dept. Agric., 
November, 1899, pp. 99-102. 
Account, of damage to tobacco by Crambus caliginosellus. 
649. Jones, L. R. Certain potato diseases and their remedies. <Bull. 
No. 72, Vt. Agric. Exp. Sta., September, 1899, pp. 69. 
Notes on Doryphora decemlineata, Crepidodera cucumeris, and grasshoppers. 
650. Kains, M. G. Carpet beetles. <Farm and Fireside, 1 August, 
1899, 1 fig. 
