BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
57 
781. Hackenberg, G. P. [Loss from grain weevils in Texas, The 
bisulphide of carbon remedy.] <Insect Life, v. 4, June, 1802, 
p.331. 
782. Hackenberg, G. P. [On the carbon bisulphide remedy against 
stored-grain pests.] <Insect Life, v. 5, September, 1802, pp. 
43-44. 
783. Hackenberg, G. P. [Bisulphide of carbon against grain pests.] 
<Insect Life, v. 5, April, 1893, p. 257. 
784. Hall, W. B. [Insect injuries in Ohio in 1888.] <Insect Life, v. 1, 
April, 1880, p. 319. 
Brief notes on various common insects. 
785. Hamilton, H. The red scale. <Oalif. Fruit Grower, 3 May, 1800. 
780. Hamilton, H. Red scale (Aspidiotus aurantii). <Rept. State 
Bd. Hortic. for 1890 (1800), pp. 58-60. 
787. Hamilton, J. Balaninus: Its food habits. <Oan. Entom., Janu¬ 
ary, 1800, pp. 1-8, fig. 1. 
A succinct account of the habits of several species. 
788. Hamilton, J. The clover-leaf beetle in western Pennsylvania. 
<Insect Life, v. 4, March, 1801, p. 270. 
780. Hamilton, J. Comments on the fifth report of the United States 
entomological commission. <Insect Life, v. 4, November 
1801, pp. 120-132. 
700. Hamilton, J. Medico-entomology. <Ent. News, 1803, pp. 217- 
219. 
Note on a larva of Hypoderma taken from the throat of a hoy. 
791. Hamilton, J. The red bug. <Ent. News, 1806, pp. 2-3. 
702. Hammond, A. G. Spraying fruit trees. <Trans. Ill. State Hortic. 
Soc., 1888, pp. 62-66. 
793. Hammond, A. O. Spraying fruit trees. <Trans. Ill. State Hortic. 
Soc., 1891, pp. 226-228. 
704. Hancock, J. L. Orgyia leucostu/ma in Chicago. <Amer. Nat., 
April, 1804, pp. 326-328. 
705. Hargitt, C. W. Notes upon the canker worm. <Insect Life, v. 
3, August, 1800, pp. 8-0. 
706. Harlow, S. C. Results of spraying. <Ann. Rept. Maine State 
Pom. Soc., 1890-01, pp. 58-62. 
Value of spraying against apple insects; recommends Paris green as better 
than London purple. 
797. Harrington, W. H. Insects infesting willows. <Rept. Ent. Soc. 
Out. for 1891 (1891), pp. 41-55, figs 15-38. 
A list of the principal willow insects. 
798. Harrington, W. H. Hymenoptera parasitica. <Rept. Ent. Soc. 
Out. for 1890 (1891), pp. 64-73, figs. 20-42. 
A general account of some Canadian parasitic forms. 
