"WILLIAM HENRY PERKIN (1860-), English chemist, was born at Sudbury, England, in 1860, eldest son of Sir William Perkin, founder of the aniline dye industry.
If yi and y 2 are the two separate displacements and if y =3/1-4-Y2, then w = - E (dye/dx + dye/dx) =0.) i w2.
They are crystalline solids showing a characteristic green metallic lustre; they are readily soluble in water and dye red or violet.
Besides rubber, it yields many valuable dye-woods and cabinet-woods, such as cedar, mahogany and logwood.
At that age he was apprenticed to a fuller and clothier, to card wool, and to dye and dress the cloth.
Like the town of Dewsbury, on the south-east, it is an important centre of the blanket and carpet manufactures, and there are also machine works, dye works and iron foundries.
Moreover, the chemical character of the tussur silk differs from that of the mulberry silk, and the fibre has much less affinity for tinctorial substances, which it takes up unevenly, requiring a large amount of dye-stuffs.
The dark colours are very difficult to bleach, but the silk itself takes dye-colours much more freely and evenly than either tussur or eria silk.
Hence the total flux is - (+ d2V d 2 V d2V dye + dz2) dy dz, dx2 and by the previous theorem this must be equal to 4'rrp dxdydz.
Among its other industries are cotton printing and dye works, brewing, and the making of metal and bronze goods.
Imports consist of cotton, linen and woollen fabrics, hardware, cutlery and machinery, kerosene, glass and earthenware; and the exports of cattle, sugar, tobacco, coffee, coco-nuts and fibre, dividivi and dye-woods, vegetable ivory, rubber, hides and skins, medicinal forest products, gold, silver and platinum.
Parmelia tinctorum, Sticta argyracea), are rich in colouring matter, and, if obtained in sufficient quantity, would yield a dye in every way equal to archil.
Cotton spinning and printing works, cotton-mill machinery works, dye-works and chemical manufactures, and neighbouring collieries maintain the industrial population.
There are also tanneries, dye-works and manufactures of silk, linen and woollen fabrics, leather and starch.
Besides quarrying, the industries include granitepolishing, concrete (crushed granite) works, dye-works, papermills and artificial manures.
45 g 4 flour mills, 8 soap manufactories, 13 shipbuilding and engineering works, chair manufactories, dye works, chemical works, tanneries and a dynamite factory have been established.
It possesses worsted and cotton mills, iron works, dye works and chemical works.
The Brazilian flora is also rich in medicinal and aromatic plants, dye-woods, and a wide range of gum and resin-producing shrubs and trees.
The forest products, whose collection and preparation form regular industries, are rubber (called Gaucho or goma), tonka beans, vanilla, copaiba, chique-chique, sarsaparilla, divi-divi, dye-woods, cabinet-woods and fibres.
Chrysaniline (diamino-phenylacridinei) forms red-coloured salts, which dye silk and wool a fine yellow; and the solutions of the salts are characterized by their fine yellowish-green fluorescence.
Other crops which are grown in the province, especially in Upper Burma, comprise maize, tilseed, sugar-cane, cotton, tobacco, wheat, millet, other food grains including pulse, condiments and spices, tea, barley, sago, linseed and other oil-seeds, various fibres, indigo and other dye crops, besides orchards and garden produce.
(The term " 30% benzol " means that 30% by volume distils below ioo°.) A purer benzol was subsequently required for the manufacture of aniline black and other dye-stuffs.
In hydatid disease there is, as a rule, a marked increase in the number of those white corpuscles which possess a specially staining affinity with the dye eosin, and are therefore known as eosinophile cells.
Of these, the 8-acid and Bronner's acid are of more value technically, since they combine with ortho-tetrazoditolyl to produce fine red dye-stuffs.
The principal exports from Maracaibo are coffee, hides and skins, cabinet and dye-woods, cocoa, and mangrove bark, to which may be added dividivi, sugar, copaiba, gamela and hemp straw for paper-making, and fruits.
Many scale-insects are among the most serious of pests, but various species have been utilized by man for the production of wax (lac) and red dye (cochineal).
In the temperate uplands of the interior, as about Luang Prabang, Himalayan and Japanese species occur - oaks, pines, chestnuts, peach and great apple trees, raspberries, honeysuckle, vines, saxifrages, Cichoraceae, anemones and Violaceae; there are many valuable timber trees - teak, sappan, eagle-wood, wood-oil (Hopea), and other Dlpterocarpaceae, Cedrelaceae, Pterocarpaceae, Xylia, ironwood and other dye-woods and resinous trees, these last forming in many districts a large proportion of the more open forests, with an undergrowth of bamboo.
He lost no time in bringing this substance before the managers of Pullar's dye-works, Perth, and they expressed a favourable opinion of it, if only it should not prove too expensive in use.
Perkin also had a large share in the introduction of artificial alizarin, the red dye of the madder root.
They have from very early times been resorted to as a means of staining the hair of a dark colour, and they are the base of the tattooing dye of the Somali women.3 The gall-making Hymenoptera include, besides the Cynipidae proper, certain species of the genus Eurytoma (Isosoma, Walsh) and family Chalcididae, 'e.g.'
- The name "Costa Rica," meaning "rich coast," is well deserved; for, owing to the combination of ample sunshine and moisture with a wonderfully fertile soil, almost any kind of fruit or flower can be successfully cultivated; while the vast tracts of virgin forest, which remain along the Atlantic slopes, contain an abundance of cedar, mahogany, rosewood, rubber and ebony, with fustic and other precious dye-woods.
The principal industrial establishment is the metalfoundry of Sainte-Marguerite, where copper, tin and other metals are worked; there are also flour-mills, saw-mills and dye-works.
Into the dyeing of silk it is not here necessary to enter, except in so far as concerns a nefarious practice, carried on in dye-houses, which has exercised a most detrimental influence on the silk trade.
The natural and forest products of Mexico include the agave and yucca (ixtle) fibres already mentioned; the " ceibon " fibre derived from the silk-cotton tree (Bombax pentandria); rubber and vanilla in addition to the cultivated products; palm oil; castor beans; ginger; chicle, the gum extracted from the " chico-zapote " tree (Achras sapota); logwood and other dye-woods; mahogany, rosewood, ebony, cedar and other valuable woods; " cascalote " or divi-divi; jalap root (Ipomaea); sarsaparilla (Smilax); nuts and fruits.