. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. Fig. 18.—Portion of the outdoor rearing shelter used in the rearing of insects at North East, Pa. during 1909. (Original.). Fig. 19.—Wooden-frame box with gla<s bottom and \vire-screen cover used in studying the pupal stage of the grape root-worm beetle. (Original.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of E

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. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. Fig. 18.—Portion of the outdoor rearing shelter used in the rearing of insects at North East, Pa. during 1909. (Original.). Fig. 19.—Wooden-frame box with gla<s bottom and \vire-screen cover used in studying the pupal stage of the grape root-worm beetle. (Original.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Entomology. Washington : G. P. O.

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Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectentomology