How to use Camphor in a sentence
Tea and camphor are the staple exports.
In 1755 Menghini published an elaborate study of the action of camphor on a great variety of different kinds of animals.
The motion of small pieces of camphor floating on water arises from the gradual solution of the camphor.
If the hoop enclose an area of (say) one-third of the maximum, and if the water be clean, camphor fragments floating on the interior enter with vigorous movements.
Gutta-percha (getah percha in the vernacular), camphor, cinnamon, cloves, nutmegs, gambir and betel, or areca-nuts, are all produced in the island; most of the tropical fruits flourish, including the much-admired but, to the uninitiated, most evil-smelling durian, a large fruit with an exceedingly strong outer covering composed of stout pyramidal spikes, which grows upon the branches of a tall tree and occasionally in falling inflicts considerable injuries upon passers-by.Advertisement
A curious fact, which may be used for the detection of the minutest quantity of oils and fats, is that camphor crushed between layers of paper without having been touched with the fingers rotates when thrown on clean water, the rotation ceasing immediately when a trace of oil or fat is added, such as introduced by touching the water with a needle which has been passed previously through the hair.
Agilawood, the camphor tree, and ebony are also found in smaller quantities.
The Malays also work jungle produce, of which the most important are gutta, rattans, agila wood, camphor wood, and the beautiful kamuning wood which is used by the natives for the hilts of their weapons.
An ascent made by Dr Honda of the imperial university of Japan showed that, up to a height of 6000 ft., the mountain is clothed with primeval forests of palms, banyans, cork trees, camphor trees, tree ferns, interlacing creepers and dense thickets of rattan or stretches of grass higher than a man's stature.
Camphor, sugar, tea, indigo, ground peanuts, jute, hemp, oil and rattans are all articles of export.Advertisement
The grateful perfumed powder abir or rand y is composed either of rice, flour, mango bark or deodar wood, camphor and aniseed, or of sandalwood or wood aloes, and zerumbet, zedoary, rose flowers, camphor and civet.
The produce of the Eastern Islands is also collected at its ports for re-exportation to India, China and Europe - namely, gold-dust, diamonds, camphor, benzoin and other drugs; edible bird-nests, trepang, rattans, beeswax, tortoiseshell, and dyeing woods from Borneo and Sumatra; tin from Banka; spices from the Moluccas; fine cloths from Celebes and Bali; and pepper from Sumatra.
The British Pharmacopoeia contains a watery solution - the Aqua Chloroformi - which is useful in disguising the taste of nauseous drugs; a liniment which consists of equal parts of camphor liniment and chloroform, and is a useful counter-irritant; the Spiritus Chloroformi (erroneously known as "chloric ether"), which is a useful anodyne in doses of from five to forty drops; and the Tinctura Chloroformi et Morphinae Composita, which is the equivalent of a proprietary drug called chlorodyne.
Baeyer's laboratory at Berlin, attacking among other problems that of the composition of camphor.
If this takes place more rapidly on one side of the piece of camphor than on the other side, the surface-tension becomes weaker where there is most camphor in solution, and the lump, being pulled unequally by the surface-tensions, moves off in the direction of the strongest tension, namely, towards the side on which least camphor is dissolved.Advertisement
The thickness of the film of oil adequate to check the camphor movements can be determined with fair accuracy by depositing a weighed amount of oil (such as 8 mg.) upon the surface of water in a large bath.
Conditions of a contaminated surface may easily be distinguished, upon all of which camphor fragments spin vigorously.
And yet the greasing may be so slight that camphor fragments move with apparently unabated vigour.
Massage oils include rosemary, benzoin, chamomile, camphor, juniper, and lavender.
Thus prepared, the specimens are placed on shelves or movable trays, at intervals of about 6 in., in an air-tight cupboard, on the inner side of the door of which, as a special protection against insects, is suspended a muslin bag containing a piece of camphor.Advertisement
It may be prepared by fusion of ortho-toluene sulphonic acid with potash; by the action of phosphorus pentoxide on carvacrol; or by the action of zinc chloride on camphor.
The most important of these processes is the first, as it is applicable to a large number of substances of the widest range, such as oil of peppermintand camphor.
At present it is almost a by-product in the manufacture of artificial camphor.
In the arts, oil of turpentine is used on the largest scale in the manufacture of varnishes, and in smaller quantities for the production of terpineol and of artificial camphor.
In camphor factories, fumes of acetic acid can cause keratitis (Duke-Elder and McFaul 1972 ).Advertisement
The camphor molecule has one polar atom (a carbonyl oxygen) and three methyl groups.
The camphor trade being a government monopoly, the quantity exported is under strict control.
Imitation tortoiseshell is likely to be cellulose nitrate (which smells of camphor).
This analgesic compound of menthol, camphor and essential oils is manufactured in Singapore.
The lip plumping formula contains ingredients like camphor that make your lips swell.
Preparations containing aloe, menthol, camphor, eucalyptus oil, and similar ingredients are available commercially.
Sequoia and the tulip-tree still remain; figs are abundant; laurels are represented by Sassafras and camphor; herbaceous plants (Ranunculaceae, Cruciferae, Umbelliferae) are present, though, as might be expected, only fragmentarily preserved.
Buchu leaves contain a volatile oil, which is of a dark yellow colour, and deposits a form of camphor on exposure to air, a liquid hydro-carbon being the solvent of the camphor within the oil-glands.
Among the principal varieties are those which contain carbolic acid and other ingredients of coal tar, salicylic acid, petroleum, borax, camphor, iodine, mercurial salts, sulphur and tannin.
But some of the most valuable products of the island, as camphor and rattan, are to be found in the upland forests, and the Chinese, whenever they ventured too far in search of these products, fell into ambushes of hill-men who neither gave nor sought quarter, and who regarded a Chinese skull as a specially attractive article of household furniture.
If the plants are subjected to some process, before mounting, by which injurious organisms are destroyed, such as exposure in a closed chamber to vapour of carbon bisulphide for some hours, the presence of pieces of camphor or naphthalene in the cabinet will be found a sufficient preservative.
If parts of the design are to be in relief, they are built up with a putty of black lacquer, white lead, camphor and lamp-black.
This work led naturally to the synthesis of many terpenes and members of the camphor group; also to the investigation of various alkaloids and natural colouring matters.
About 15% of a volatile oil is obtained by distilling cubebs with water; after rectification with water, or on keeping, this deposits rhombic crystals of camphor of cubebs, C 15 H 26 O; cubebene, the liquid portion, has the formula C15HV4.
Pepper, nutmegs and cloves were long the objects of the most important branch of Dutch commerce; and gutta-percha, camphor, dammar, benzoin and other forest products have a place among the exports.
A similar cement is a mixture of dried fresh curd with i nth of its weight of quicklime and a little camphor; it is made into a paste with water when employed.
To-day Labuan chiefly exists as a trading depot for the natives of the neighbouring coast of Borneo, who sell their produce - beeswax, edible birds-nests, camphor, gutta, trepang, &c., - to Chinese shopkeepers, who resell it in Singapore.
Small as is the above amount of oil, the camphor test is a comparatively coarse one.
Para-xylene is obtained when camphor is distilled with zinc chloride, but it is best prepared from para-brom-toluene or dibrombenzene, methyl iodide and sodium.
At present the manufacture of artificial camphor may be considered a solved problem, although it is doubtful whether such camphor will be able to compete in price with the natural product in the future.
The various camphors, such as laurel camphor, Borneo camphor, menthol and cumarin, are oxidized derivatives of essential oils, and differ only superficially from them in their action.
It is important to choose a shaving cream/gel without alcohol, menthol, mint, camphor, or high levels of potassium or sodium hydroxide.
It is, however, part of the personal history of Abd-ar-rahman that when in 763 he was compelled to fight at the very gate of his capital with rebels acting on' behalf of the Abbasids, and had won a signal victory, he cut off the heads of the leaders, filled them with salt and camphor and sent them as a defiance to the eastern caliph.
The English dye for seals is to-day undoubtedly the best; its constituents are more or less of a trade secret, but the principal ingredients comprise gall nuts, copper dust, camphor and antimony, and it would appear after years of careful watching that the atmosphere and particularly the water of London are partly responsible for good and lasting results.
It may be synthetically prepared by the fusion of cymol sulphonic acid with caustic potash; by the action of nitrous acid on 1-methyl-2-amino-4-propyl benzene; by prolonged heating of 5 parts of camphor with r part of iodine; or by heating carvol with glacial phosphoric acid.
Many of the roots and vegetables of Europe have been introduced, as well as some of those peculiar to the tropics, including maize, millet, yams, manioc, dhol, gram, &c. Small quantities of tea, rice and sago, have been grown, as well as many of the spices (cloves, nutmeg, ginger, pepper and allspice),' and also cotton, indigo, betel, camphor, turmeric and vanilla.