. The butterfly book; a popular guide to a knowledge of the butterflies of North America. With 48 plates in color-photography, reproductions of butterflies in the author's collection, and many text illustrations presenting most of the species found in the United States. Butterflies -- North America. The Capture, Preparation, and Preservation of Specimens. For large moths and butterflies cyanide of potash and carbonate of ammonia serve very well, but it must be remembered that carbonate of ammonia bleaches insects which are green in color. It is well, in my judgment, to use a drop or two of chl
. The butterfly book; a popular guide to a knowledge of the butterflies of North America. With 48 plates in color-photography, reproductions of butterflies in the author's collection, and many text illustrations presenting most of the species found in the United States. Butterflies -- North America. The Capture, Preparation, and Preservation of Specimens. For large moths and butterflies cyanide of potash and carbonate of ammonia serve very well, but it must be remembered that carbonate of ammonia bleaches insects which are green in color. It is well, in my judgment, to use a drop or two of chloroform in the jar charged with carbonate of ammonia, for the collection of diurnal lepidoptera. By putting a few drops of chloroform into the jar, the insect is anesthetized, and its struggles are made quickly to cease. The principal objection to chloroform is the fact that it induces rigidity of the thoracic muscles, which subsequently sometimes interferes with handsome setting. In the preparation of the poisoning-jar it is well to use a jar which has a ground-glass stop- per, and the mouth of which is about three inches in diameter. This will be large enough for most specimens. The one-pound hydrate of chloral jars, provided with glass stoppers and sold by Schering, make the neatest collecting-jars that are known to the writer. I have found it well to have such jars Fig. 46.âCya- partly covered with leather after the fashion of a nide-Jar prepared j ⢠1 ⢠n 1 * â ⢠1 , . , â for use: f, perfo- dnnking-flask. An opening in the leather is left rated cardboard; on either side, permitting an inspection of the O, lumps of cya- contents of the jar. The leather protects from breakage. At the bottom of such a jar a few lumps of cyanide of potash, about the size of a filbert, should be placed. Over this may be laid a little cotton, to prevent the lumps from rat- tling about loosely at the bottom of the jar. Over the cotton there is pasted a sheet of strong white paper, pe
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishergarde, bookyear1922
