80 
BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
798. Osborn, H. Iusect remedies. <Traus. Iowa State Hortic. Soc. 
for 1881, 1882, v. 16, pp. 320-324. 
Means against insects; application of insecticides; the use of arsenic, lon- 
dou purple, paris green, and pyrethrum; insecticide machinery, traps, 
hand picking, preventives. 
799. Osborn, H. Mr. Dixon’s orchard insects. <Xowa Homestead, 
13 April, 1883. 
800. Osborn, H. u Orchards and insects,”—Review. <Iowa Home¬ 
stead, 9 May, 1883. 
Review of Dixon’s article. 
801. Osborn, H. May beetles and blackbirds. <Iowa Homestead, 
18 May, 1883. 
Ravages of Lachnosterna quercina [—fusca ]; blackbirds as an enemy to the 
same. 
802. Osborn, H. Entomological notes.—Answers to queries. <Iowa 
Homestead, 30 June, 1883. 
Notes on Eustrotia carneola, Agotis saucia, Parallelia bistriaria, and an unde¬ 
termined deltoid. 
803. Osborn, H. Dangerous poisons as insecticides. <Iowa Home¬ 
stead, 3 August, 1883. 
801. Osborn, H. An epidemic disease of Caloptenits differentialis. 
<Amer. ISTat., December, 1S83, v. 17, pp. 1286-1287. 
Notice of Entomophtliora calopteni parasitic in Caloptenus differ entialis. 
805. Osborn, H. Life histories of internal parasites of domestic 
animals. <Proc. 9th Ann. Meeting Iowa State Improved 
Stock Breeders’ Assoc, for 1882,1883. 
Notes on the life habits of Gastrophilus equi and (Estrus ovis. 
806. Osborn, H. Entomological notes for the year 1882. <Trans. 
Iowa State Hortic. Soc. for 1882, 1883, v. 17, pp. 205-218. 
Food habits of Thripidse; notes on Pulvinaria innumerabilis, Chionaspis fur- 
furus, C. salicis, Mytilaspis pomorum, M. citricola, Aspidiotus nerii, Lecanium 
hesperidum, L. sp., and Diaspis sp.; means against Coccidse; habits of and 
means against Mamestra picta, Emphytus \—Harpiphorus~\ maculatus , and 
Selandria [— Eriocampa ] cerasi. 
807. Osborn, H. Entomology.—Coal tar and borers. <Iowa Home¬ 
stead, 4 April, 1884. 
Notes on the prevention of the oviposition of borers. 
808. Osborn, H. Questions and answers. <Iowa Homestead, June, 
1884. 
Means against insects. 
809. Osborn, H. Gall and blister mites. <Bull. Iowa Agric. College, 
August, 1884, No. 2, pp. 54-61, pi. 1. 
Life history and habits of Phytoptidss, and of Phytoptus pyri, P. quadripes, 
Phytoptus sp., on ash, elm, and box elder; remedies. 
810. Osborn, H. The corn root-worm — [Diabrotica longicornis]. 
<Bull. Iowa Agric. College, August, 1884, No. 2, pp. 61-69, pi. 2. 
Life history and ravages of Diabrotica hnigicoruis. 
