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Age - Adult
144 Pages, Paperback
Publish Date: 6/2009
Complete Instruction in Rearing Silkworms,|
by Carrie Williams
TABLE OF CONTENTS|
ARRANGEMENTS FOR SPINNING
|COCOONS - HOW TO CARE FOR THEM
|MILLERS - HOW TO CARE FOR THEM
|FURNITURE OF COCOONERY
|HOW TO PRESERVE SILKWORMS
|HOW TO MOUNT MILLERS
|LEAVES - HOW TO KEEP THEM
|MISCELLANEOUS NOTES ON SILK
|DISEASES OF SILKWORMS
|SILK IN CHINA
|SILK IN JAPAN
|ETC.... (OTHER COUNTIES)
|SILK IN THE UNITED STATES
|A SILK STATION
|SILK REEL ILLUSTRATION
EXCERT FROM THE BOOK
Silkworms come from the eggs of the silk-moth (Bombyx mori).
The eggs are about the size of mustard seed. When first laid,
they are yellow, afterward they change to a dark slate-color.
As worms, they have five ages, one is the chrysalis, and one
as the miller; so we may say truly, the silkworm has seven ages.
When the worms are first hatched from the eggs, they are about an eighth
of an inch long, all covered with black hairs, that fall off in a few
days. The head is black and shiny.
When the worms are nearly ready to come out of the shell, by the use of
a magnifier the worm may be very plainly seen coiled round the outer edge
of the shell. One black spot shows very conspicuously. That is the head
of the insect. The eggs are slightly depressed in the center after the
vitalized particles concentrate round the outer edge of the eggs to
form the bodies of the worms. When the moment of perfect maturity
arrives, the worms burst a little hole in each shell, and crawl out
head first. They immediately seek food. The great cycle of silkworm
life (i.e., from the egg to the egg again) is from
thirty-six to forty-six days. When about four days old,
they pass into a kind of sleep, called molt, in which the
condition they remain twenty four hours, when they are said
to molt, that means, throwing off the entire old skin. They
first throw off the head-covering, and then crawl out of the
body skin, which remains attached to the leaves or tray where
they were when resting during the molt, or slumber.
While in the first molt, worms look like bits of rusty wire.
As they come out of the comatose state, the body is a
silvery gray, and the head a light brown. This is the second
age. Very soon after molting they require food. They
continue to grow rapidly for five days more, and then
again relapse into a comatose state and wake to the third age.
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