Silk worms taken from mulberry trees, sorted and placed on thorns to weave cocoons in China.
China Date:1928 Duration:2 min 30 sec Sound:NO SOUND
Describes raw materials used in telephone manufacturing. The map shows location of China. Silk worms are taken from mulberry trees in China. Worms are sorted and placed in a nest of thorns to weave cocoons. Cocoons are picked up from the nest. Man shows a box containing various samples of silk. Animation shows the use of silk as an insulator inside a telephone.
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