Hummel, J. J. (John James), -1902 · London [etc.] New York, Cassell & Company, Limited · leaf 67
47 SILK COCOON. Chap. IV.l towards the interior, owing to the exhaustion of the cater- pillar from want of food during the spinning process. The cocoons are white or yellow, contracted in the centre, about 3 centimetres long, and 1 5 — 2 centimetres thick. As soon as the metamorphosis of the… … days after the females have laid 16.— Silk Cocoon, their eggs they die, not being provided with any organ of nutrition. The eggs are slowly dried, and stored in glass bottles in a dry dark place till the following spring. Experience has shown that the worms issuing from 100 grams of eggs consume…
Dyes and dyeing
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