Life of Silkworm
     Domesticated from a species of wild worm growing in the mulberry tree in ancient times,the silkworm Bombyx mori L.,during it's life span undergoes 4 development stages:ovum,larvae,chrysalis and adult,each with absolutely different morphology characteristics.The silkworms,which propagate themselves by ova,grow in the form of larvae,and when mature after 4 times of exuviations(about 25 days),they begin spinning silk 0.35g per worm into cocoons.On completion of this,the worms,having sloughed out of the cocoons as adults(silk moth).The female adults then mate with the males and lay eggs by which to produce posterity,and in a week's time or so bring their whole life cycle.About 60 days to an end through natural death.

　　　　　　　　　　　　　　　　　　 Reeling
　　 Having been boiled with hot water the cocoons are groped and picked end by strow,then he brin from 7 to 8 cocoons is doubled through button and wrapped on weel.After that the specified filament is made.