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KERMES (Arab. girmiz; see CRIMSON)

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Originally appearing in Volume V15, Page 757 of the 1911 Encyclopedia Britannica.
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KERMES (Arab. girmiz; see See also:CRIMSON)  , a See also:crimson dye-stuff, now superseded by See also:cochineal, obtained from See also:Kermes ilicis (= Coccus ilicis, See also:Lat.= C. vermilio, G . Planchon) . The genus Kermes belongs to the Coccidae or See also:Scale-See also:insects, and its See also:species are See also:common on oaks wherever they grow . The species from which kermes is obtained is common in See also:Spain, See also:Italy and the See also:South of See also:France and the Mediterranean See also:basin generally, where it feeds on Quercus coccifera, a small See also:shrub . As in the See also:case of other scale-insects, the See also:males are relatively small and are capable of See also:flight, while the See also:females are wingless . The females of the genus Kermes are remarkable for their See also:gall-like See also:form, and it was not until 1714 that their See also:animal nature was discovered . In the See also:month of May, when full grown, the females are globose, 6 to 7 millim. in See also:diameter, of a reddish-See also:brown See also:colour, and covered with an ash-coloured See also:powder . They are found attached to the twigs or buds by a circular See also:lower See also:surface 2 millim. in diameter, and surrounded by a narrow See also:zone of See also:white cottony down . At this See also:time there are concealed under a cavity, formed by the approach of the abdominal See also:wall of the See also:insect to the dorsal one, thousands of eggs of a red colour, and smaller than See also:poppy See also:seed, which are protruded and ranged regularly beneath the insect . At the end of May or the beginning of See also:June the See also:young See also:escape by a small orifice, near the point of See also:attachment of the See also:parent . They are then of a See also:fine red colour, elliptic and See also:convex in shape, but rounded at the two extremities, and See also:bear two threads See also:half as See also:long as their See also:body at their posterior extremity . At this See also:period they are extremely active, and swarm with extraordinary rapidity all over the See also:food plant, and in two or three days attach themselves to fissures in the bark or buds, but rarely to the leaves .

In warm and dry summers the insects breed again in the months of See also:

August and See also:September, according to See also:Emeric, and then they are more frequently found attached to the leaves . Usually they remain immovable and apparently unaltered until the end of the succeeding See also:March, when their bodies become gradually distended and lose all trace of abdominal rings . They then appear full of a reddish juice resembling discoloured See also:blood . In this See also:state, or when the eggs are ready to be extruded, the insects are collected . In some cases the insects from which the young are ready to escape are dried in the See also:sun on See also:linen cloths—care being taken to prevent the escape of the young from the cloths until they are dead . The young insects are then sifted from the shells, made into a See also:paste with See also:vinegar, and dried on skins exposed to the sun, and the paste packed in skins is then ready for exportation to the See also:East under the name of " pate d'ecarlate." In the See also:pharmacopoeia of the ancients kermes triturated with vinegar was used as an outward application, especially in wounds of the nerves . From the 9th to the 16th See also:century this insect formed an ingredient in the " confectio alkermes," a well known See also:medicine, at one time See also:official in the See also:London pharmacopoeia as an astringent in doses of 20 to 6o grains or more . See also:Syrup of kermes was also prepared . Both these preparations have fallen into disuse . See also:Mineral kermes is trisulphide of See also:antimony, containing a variable portion of trioxide of antimony both See also:free and combined with See also:alkali . It was known as poudre See also:des Chartreux because in 1714 it is said to have saved the See also:life of a Carthusian See also:monk who had been given up by the See also:Paris See also:faculty; but the monk See also:Simon who administered it on that occasion called it Alkermes mineral . Its reputation became so See also:great that in 1720 the See also:French See also:government bought the See also:recipe for its preparation .

It still appears in the pharmacopoeias of many See also:

European countries and in that of the See also:United States . The product varies somewhat according to the mode of preparation adopted . According to the French directions the official substance is obtained by adding 6o grammes of powdered antimony trisulphide to a boiling See also:solution of 128o grammes of crystallized See also:sodium carbonate in 12,800 grammes of distilled See also:water and boiling for one See also:hour . The liquid is then filtered hot, and on being allowed to cool slowly deposits the kermes, which is washed and dried at too° C.; prepared in this way it is a brown-red velvety powder, insoluble in water . See G . Planchon, Le Kermes du chine (See also:Montpellier, 1864) ; See also:Lewis, Materia Medica (1784), pp . 71, 365; Memorias sobre la grana Kermes de Espana (See also:Madrid, 1788); See also:Adams, See also:Paulus See also:Aegineta, iii . 180; See also:Beckmann, See also:History of Inventions .

End of Article: KERMES (Arab. girmiz; see CRIMSON)
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