116 
BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
1003. Hagen, H. A. Troublesome insects. The carpet beetle and other 
domestic pests. <Boston Daily Advertiser, 19 December, 1878. 
<Boston Evening Transcript, 19 December, 1878. <Proc, 
Bost. Soc. Nat. Hist., 1879, v. 20, p. 121. 
Habits, ravages, and means against Anthrenus scrophularice; abundance of 
Pulex irrltans. 
1004. Hagen, H. A. Museum pests observed in the entomological col¬ 
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1879, v. 20, pp. 56-62. Reprint: < Journ. Applied Science, 1879, 
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Habits and ravages of specie^ of Dermestes, Attagenus, Anthrenus, Ptinus, 
Tribolium, Silvanus, Tinea, Atropos, Clothilla, Tyroglyphus?, Psocus, 
and (Ecophora. 
1005. Hagen, H. A. Attacks of native insects upon imported trees 
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List of insects injuring Pinas strobus and Robiniapseudacacia in Germany. 
1006. Hagen, H. A. Obnoxious pests; suggestions relative to their 
destruction. <Boston Evening Transcript, 11 April, 1879. 
<Worcester Evening Gazette, April, 1879. <Can. Ent., 1879, 
v. 11, pp. 110-114. <Ent. Zeit. Stettin, 1879, v. 40, pp. 369- 
371; 1880, v. 41, p. 355. <Ann. Rept. Ent. Soc. Ontario, for 
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For contents see No. 1009, which is a reprint with additions. 
1007. Hagen, H. A. Literature concerning injuries to books by insects. 
<Library Journal, September-October, 1879, v. 4, pp. 373-374. 
Citation of works with analysis of their contents. 
1008. Hagen, H. A. [Phytoscopus clitellarius.] <Proc. Bost. Soc. Nat. 
Hist., December, 1879, v. 20, p. 284. 
Advises Hie use of printer’s ink to prevent the ravages of Phytoscopus clitel- 
larius. 
1009. Hagen, H. A. Destruction of obnoxious insects, Phylloxera, 
potato beetle, cotton worm, Colorado grasshopper, and green 
house pests by application of the yeast fungus. <Oambridge, 
1879, 11 pp. See also: <N. Y. Weekly Tribune, 4 February, 
1880. <St. Petersburger Deut. Zeit., 7 February, 1880. <Comp. 
Rend. Paris, 9 February, 1880. <Sa!t Lake Semi Weekly 
Herald, 17 December, 1880. <Schriften Oecon. Phys. Gesell, 
Konigsberg, 1880. <Bull. Soc. Ent. Ital., 1880, v. <Bayerische 
Industrie-und Gewerbeblatt, 1880, p. 212. <Kouigsberger Har- 
tuugsche Zeit., January, 1881. Abstract: <Nature, 1879, 
v.21, p. 188. Review: <Nation, 11 December, 1879, v. 29, pp. 
402-403. <Zool. Anzeiger, 26 January, 1880, v. 3 pp. 44-47. 
<Amer. Ent., February, 1880, v. 3, n. s., v. 1, pp. 40-41. < Ainer. 
Nat., 1880, v. 14, pp. 133-134. 
Maintains that insects sprinkled with or fed on yeast fungus or beer mash 
will become infected with the spores of the same and will be killed; com¬ 
munication of the disease to other insects; yeast fungus as apropagator of 
disease. 
