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The silkworms are fed with mulberry leaves, and after the fourth moult, they climb a twig placed near them and spin their silken cocoons. The silk is a continuous filament comprising fibroin protein, secreted from two salivary glands in the head of each worm, and a gum called sericin, which cements the filaments. The sericin is removed by ...
Bombyx is the genus of true silk moths or mulberry silk moths of the family Bombycidae, also known as silkworms, which are the larvae or caterpillars of silk moths. The genus was erected as a subgenus [ 2 ] by Carl Linnaeus in his 10th edition of Systema Naturae (1758).
Morus alba, known as white mulberry, common mulberry and silkworm mulberry, [2] is a fast-growing, small to medium-sized mulberry tree which grows to 10–20 m (33–66 ft) tall. It is generally a short-lived tree with a lifespan comparable to that of humans, although there are some specimens known to be more than 250 years old. [ 3 ]
Silkworms and mulberry leaves placed on trays (Liang Kai's Sericulture c. 13th century) Silkworms were first domesticated in China more than 5,000 years ago. [28] [29] Pupae Silkworm cocoons weighed and sorted (Liang Kai's Sericulture) Silkworm breeding is aimed at the overall improvement of silkworms from a commercial point of view.
The Ancient Greeks and Romans cultivated the mulberry for silkworms; at least as early as 220 AD, Emperor Elagabalus wore a silk robe. [32] English clergy wore silk vestments from about 1500 onwards. [32] Mulberry and the silk industry played a role in colonial Virginia. [32]
This is a list of Superfund sites in Indiana designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law. The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency (EPA) to create a list of polluted locations requiring a long-term response to clean up hazardous material contaminations. [1]
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The Cheney silk processing business began in the 1830s with the cultivation of mulberry trees, which silkworms fed on, and expanded in 1838 into a silk-spinning operation that was located near the family homestead. In 1840 the mulberry market crashed, and many trees were affected by a blight.