. Insect life; an introduction to nature study and a guide for teachers, students and others interested in out-of-door life. Entomology; Nature study. Fig. they may serve very well the purposes of a tempora- ry study. The Pinning of Specimens.—The appearance of a collection of insects depends greatly upon the care taken in pinning the specimens. Nearly all insects should be pinned through the mid- dle of the thorax. Many bugs (He- miptera) are best pinned through the scutellum (Fig. 261), and beetles are pinned through the right wing-cov- er at about one fourth its length from the base (
. Insect life; an introduction to nature study and a guide for teachers, students and others interested in out-of-door life. Entomology; Nature study. Fig. they may serve very well the purposes of a tempora- ry study. The Pinning of Specimens.—The appearance of a collection of insects depends greatly upon the care taken in pinning the specimens. Nearly all insects should be pinned through the mid- dle of the thorax. Many bugs (He- miptera) are best pinned through the scutellum (Fig. 261), and beetles are pinned through the right wing-cov- er at about one fourth its length from the base (Fig. 262). About one fourth of the length of the pin should be allowed to project above the specimen ; uniformity in this respect will add greatly to the neatness of the appearance of the collection. A convenient device for securing uniformity is what may be termed a pinning block. This is made from strips of wood which are one fourth as thick as the pins f^'T" J are long, and which are fas- "SL 1 ^ tened together as shown in " Fig. 263. A hole just large enough to allow the passage of the head of an insect pin is bored through the center of each of the steps of the block. In pinning an insect the pin is pushed through the insect so that less than one fourth of its length projects above it, and then the insect is pushed back into place by in- Fig. 263.—A pinning 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 Comstock, John Henry, 1849-1931; Comstock, Anna Botsford, 1854-1930. New York, D. Appleton and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomol, bookyear1901
