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Updated: May 2, 2025
Underneath these jaws are two very tiny apertures set close together through which the caterpillar draws and unites into one the two strands of silk. This is sometimes called the spinaret. The silk substance, which is really a yellow gum, passes through the two long glands that run along each side of the silkworm and are fashioned into a single thread in the spinaret."
The silkworms poised themselves on the lower extremity of their bodies and using their front legs to guide the thread, sent it hither and thither from their mouths in wavy, irregular motion until the little egg-shaped ball was finished. The two fibres from the right and left side of the worm were so perfectly united in the spinaret that it was impossible to detect more than one thread.
It is that material which it unites into a single thread in the spinaret, you know. Well, before the worm has a chance to spin, it is put into vinegar and this jellied silk is extracted. It is first soaked in cold water and afterward in a caustic solution so that its outer covering can be loosened and taken off.
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