A preliminary introduction to the study of entomologyTogether with a chapter on remedies, or methods that can be used in fighting injurious insects; insect enemies of the apple tree and its fruit, and the insect enemies of small grains . TO THE STUDY OF ENTOMOLOGY. 83 Some of the species of the genus Boreus are found upon the snow inmidwinter. ORDER XIII TRlCnOFTBRk.—{Hairy-winged Insects-Caddis flies.)The members of this rather small order are very interesting insectsbecause of the habits of the larvae. These latter live in the water, andare both vegetable and animal feeders. They construct c


A preliminary introduction to the study of entomologyTogether with a chapter on remedies, or methods that can be used in fighting injurious insects; insect enemies of the apple tree and its fruit, and the insect enemies of small grains . TO THE STUDY OF ENTOMOLOGY. 83 Some of the species of the genus Boreus are found upon the snow inmidwinter. ORDER XIII TRlCnOFTBRk.—{Hairy-winged Insects-Caddis flies.)The members of this rather small order are very interesting insectsbecause of the habits of the larvae. These latter live in the water, andare both vegetable and animal feeders. They construct cases of differentkinds and forms, each species making a particular pattern. In fact,.


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Keywords: ., bookcentury1800, bookdecade1890, booksubjectinsects, bookyear1894