. The butterfly book; a popular guide to a knowledge of the butterflies of North America. Butterflies -- North America. FIG. drinking-flask. An opening in the leather is left rated cardboard; on either side, permitting an inspection of the 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, perfor
. The butterfly book; a popular guide to a knowledge of the butterflies of North America. Butterflies -- North America. FIG. drinking-flask. An opening in the leather is left rated cardboard; on either side, permitting an inspection of the 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, perforated with a multitude of holes. In securing the white paper over the cyanide, the writer has resorted to a simple method which is explained in the annexed diagram. A piece of paper is placed under the jar, and a circle the size of the FIG. 47.—Piece of inside of the jar is traced upon it. Then a disk paper punctured and . , ,, r . , slit for pasting over !s cut out about three quarters of an inch greater the cyanide in the in diameter than the original circle (Fig. 47). The collecting-jar. r • , j paper is punctured over the entire surface included within the inner line, and then, with a scissors, little gashes are made from the outer circumference inward, so as to permit of the fold''ng up of the edge of the disk. A little gum tragacanth is 29. 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 Holland, W. J. (William Jacob), 1848-1932. New York, Doubleday & McClure Co.
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Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorhollandwjwilliamjacob, bookcentury1800, bookdecade1890
