noun
definition
The silky protective case spun by the larvae of some insects in which they metamorphose, the pupa.
definition
Any similar protective case, whether real or metaphorical.
verb
definition
To envelop in a protective case
definition
To withdraw into such a case.
Examples of cocoons in a Sentence
C. Janet observed that in a nest of Lasius alienus, established by a single female, the first workers emerged from their cocoons on the 102nd day.
The various agricultural products, cattle and mules, cheese, wines and spirits, silk cocoons and gypsum make up the bulk of the exports.
The hilly regions of Limousin, Prigord and the Cvennes are the home of the chestnut, which in some places is still a staple food; walnuts grow on the lower levels of the central plateau and in lower Dauphin and Provence, figs and almonds in Provence, oranges and citrons on the Mediterranean coast, apricots in central France, the olive in Provcnce and the lower valleys of the Rhneand Durancc. Truffles arc found under Silk Cocoons.
Crowding of positions must now be guarded against, to prevent the spinning of double cocoons (doupions) by two worms spinning together and so interlacing their threads that they can only be reeled for a coarser and inferior thread.
For special treatment towards the regeneration of an infected race, the most robust worms were to be selected, and the moths issuing from the cocoons were to be coupled in numbered cells, where the female was to be confined till she deposited her eggs.
The eria or arrindi moth of Bengal and Assam, Attacus ricini, which feeds on the castor-oil plant, yields seven generations yearly, forming loose flossy orange-red and sometimes white cocoons.
Under favourable conditions it is estimated that i r kilogrammes of fresh cocoons give 1 kilogramme of raw silk for commerce, and about the same quantity for waste spinning purposes.
It is only floss, injured and unreelable cocoons, the husks of reeled cocoons, and other waste from reeling, with certain wild silks, which are treated by the spun silk process, and the silk thereby produced loses much of the beauty, strength and brilliance which are characteristic of the manufactures from reeled silk.
When the cocoons have been gathered the chrysalides they contain are killed either by dry heat or by exposure to steam.
All cocoons stained by the premature death of the chrysalides (chiques), pierced cocoons, and any from other causes rendered unreelable, are put aside for the spun-silk manufacture.
Then the uninjured cocoons are by themselves sorted into classes having similar shades of colour, size and quality of fibre.
The object of reeling is to bring together the filaments (bave) from two or more (generally four or five, but sometimes up to twenty) cocoons, and to form them into one continuous, uniform, and regular strand, which constitutes the " raw silk " of commerce.
To do this, the natural gum of the cocoons which holds the filaments together must be softened, the ends of the filaments of the required number of cocoons must be caught, and means must be taken to unwind and lay these filaments together, so as to form a single uniform rounded strand of raw silk.
As the reeling proceeds the reeler has to give the most careful attention to the thickness of the strand being produced, and to introduce new cocoons in place of any from which the reelable silk has become exhausted.
In this water the cocoons are kept stirring by small brushes rotated by mechanical means, and as the silk softens the brushes gradually rise out of the water, bringing entangled with them the loose floss, and thereby revealing the main filament of each cocoon.
According to the qualities of raw silk used and the throwing operations undergone the principal classes of thrown silk are - (1) " singles," which consist of a single strand of twisted raw silk made up of the filaments of eight to ten cocoons; (2) tram or weft thread, consisting of two or three strands of raw silk not twisted before doubling and only lightly spun (this is soft, flossy and comparatively weak); (3) organzine, the thread used for warps, made from two and rarely three twisted strands spun in the direction contrary to that in which they are separately twisted.
A portion of the eria cocoons are white, while the others are of a lively brown colour, and for the dyeing of light colours the latter require to undergo a bleaching process.
Moonga silk from Antheraea assama has generally a rather darkbrown colour, but that appears to be much influenced by the leaves on which the worm feeds, the cocoons obtained on the champaca tree (Michelia champaca) giving a fine white fibre much valued in Assam.
This increased production of medium silk, and the growing demand for fine sorts, induced many of the cocoon-growers in the Levant to sell their cocoons to Europeans, who reeled them in Italian fashion under the name of " Patent Brutia," thus producing a very fine valuable silk.
It has the appearance of a Mussulman town on account of its mosques (only two of which are in use) and it is a centre of trade in wheat, maize, tobacco and cocoons.
Turning now to instances of the opposite kind, it is known that silkworms which spin colourless cocoons are more resistant to the attacks of a certain deadly fungus than are those which spin the yellow ones.
The town is one of the most important markets for raw silk and cocoons in the south of France, and the Gardon supplies power to numerous silkmills.
There is a school of the industrial arts and handicrafts, and majolica, paper, and silk cocoons are produced.
The principal exports are fruits (dried and fresh), carpets, cotton, fish, rice, gums, wool, opium, silk cocoons, skins, live animals, silks, cottons, wheat, barley, drugs and tobacco.
There are silk and linen industries, and an export of tobacco, walnut-wood, cocoons and vegetables for the Constantinople market.
Sericulture, a growing industry, is chiefly carried on in Ferghana, whence silk cocoons are an important item of export, the output having doubled between 1892 and 1903 (3869 tons).
Mulberries are grown on many farms for silkworms; sericulture is encouraged and taught by the state, and over 1 00,000 lb of cocoons are annually exported.
The exports consist of currants, sultanas, valonea, tobacco, olive oil, olives in brine, figs, citrons, wine, brandy, cocoons, and lamb, goat, and kid skins.
Like the leeches the earthworms produce cocoons which are a product of the glandular epithelium of the clitellum.
In these cocoons are deposited the eggs together with a certain amount of albumen upon which the developing embryos feed.
So far as is known, the production of cocoons is universal among earthworms and the remaining Oligochaeta of aquatic habit.
It is an agricultural district, producing cocoons and tobacco, and there are large forests of oak, beech and fir.
The chief agricultural products are grain, rice, beans, cotton, opium and poppy seed, sesame, fennel, red pepper, and much of the finest tobacco grown in Europe; there is also some trade in timber, livestock, skins, furs, wool and silk cocoons.
It gently cocoons a tiny 2.5kg (5lbs) newborn yet is strong enough to carry chunky toddlers!
The Caddis larvae normally live on river-beds, and make cocoons for themselves from bark, gravel and other river detritus.
He found corpuscles in Japanese cocoons and in many specimens which had been preserved for lengthened periods in public collections.
At intervals of five days after spinning their cocoons specimens were to be opened and the chrysalides examined microscopically for corpuscles.
It is important to plant the egg laying attractant shrubs close to your butterfly garden but in a place where the cocoons can remain safe until the butterflies hatch.
Silk is collected from the cocoons of silk worms.All three of these fabrics can be created with minimal processing, and can be left undyed or dyed with natural, low-impact dyes.
Cocoons offer scratch-resistant polycarbonate lenses, 40 percent more protection than the average sunglass, and a limited lifetime warranty.
For Cocoons, expect prices to vary between $40.00 and $60.00.
Our patented OveRx collections include Cocoons, Vistana, Cocoons Clip-Ons, Live Eyes and EyeArmor.
From Cocoons which are the more conventional OveRx product designed for function, comfort, and quality to Vistana which is for people who want the function of Cocoons, but with the fashion of Vistana.
The extremely lightweight design of the Cocoons frames allows them to float comfortably over prescription glasses and you don't even feel like you are wearing two pairs of glasses.
The Cocoons frames are made out of a soft touch nylon that is very lightweight, flexible, and comfortable.
Vistana has all of the same comfort and function qualities that our customers love about the Cocoons but looks more like a fashionable, conventional sunglass.
You can take a Cocoons frame and literally twist it and it will not break.
The people who buy Cocoons are those who are looking for maximum sun protection, many of which may already have existing eye health issues.
These Cocoons don't even require you to restrict your eyeglass frame choices.
They "hug" the bridge and offer the same color and protection of their traditional Cocoons.