The eggs of the silkworm, called graine, are hatched out by artificial heat at the period when the mulberry leaves are ready for the feeding of the larvae. The moth of the silkworm lays about two hundred eggs. A view of the eggs h...

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The eggs of the silkworm, called graine, are hatched out by artificial heat at the period when the mulberry leaves are ready for the feeding of the larvae. The moth of the silkworm lays about two hundred eggs. A view of the eggs hatching is shown. The silkworm molts about four times. When the caterpillars are mature they cease eating and ascend the brushwood branches or echelletes provided for them, in which they set about spinning their cocoons. They complete their cocoons in from three to four days, and in two or three days thereafter the cocoons are collected and the pupae killed to prevent further progress. Such cocoons as are selected for the production of the graine are freed from the external floss, and preserved at a temperature of 66 to 72 degree Fahrenheit. In about two weeks the moths appear.

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