. Raw silk; a practical hand-book for the buyer . iod several transformations take placeinside the cocoon. Three days after the cocoon is built,the worm becomes lifeless and dry, and is slowly trans-formed by nature into a chrysalis, an almond-shaped brownobject having nothing of the worm or the butterfly. The hard coating of the chrysalis becomes thinner as thebutterfly forms itself inside, and some morning, betweenfive and seven oclock, the coating is cracked and the but-terfly frees itself. The head of the butterfly touches theupper-inside of the cocoon. 18 Raw Silk A few drops of alkaline
. Raw silk; a practical hand-book for the buyer . iod several transformations take placeinside the cocoon. Three days after the cocoon is built,the worm becomes lifeless and dry, and is slowly trans-formed by nature into a chrysalis, an almond-shaped brownobject having nothing of the worm or the butterfly. The hard coating of the chrysalis becomes thinner as thebutterfly forms itself inside, and some morning, betweenfive and seven oclock, the coating is cracked and the but-terfly frees itself. The head of the butterfly touches theupper-inside of the cocoon. 18 Raw Silk A few drops of alkaline acid from its mouth are sufficientto soften the gummy threads and they are easily pushedaside a.^ the butterfly emerges to light—an ugly, fat and wetinsect. Its color is of a whitish or brownish hue; the bodyis yet soft, but after fifteen minutes the wings are female is larger than the male, and both are unable tofly. During their short life the bombyces, it is often remarked,live on love and fresh water, because until death they eat. Adult Males and Females of the Bombyx Mori nothing; and no sooner has the male got out of the piercedcocoon than he looks for a female and when he finds onethe fecundation may last twenty-four hours. But, lo! thewatchful hatcher is there to bring that long courting toa stop, for the fecundation is regulated scientifically, andaccording to season, to a reduced time of five to six course, the butterflies are skilfully selected beforehand,all sick or weak ones being eliminated. The female bombyx lays down some seven hundred eggs, The Mulberry and the Butterfly 10 and during the first thirty-six hours an average of fourhundred. The hatchers place the females on pieces of Hnen orcotton about half a foot square. The eggs, once laid, arcwashed in pure water, but are left on the linen until wanted,when they can be detached with a dull knife. As soon as the bombyces are dead they are submitted tothe microscope, and if some are found to
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Keywords: ., bookcentury1900, bookdecade1920, bookidrawsilkpract, bookyear1921
