Traditionally papier mache is made from old paper boiled to a pulp in water, then pressed and mixed with glue or starch paste before being forced into a previously oiled mould and dried. After drying the articles are soaked with linseed oil and dried at a higher temperature. Another variety of
papier mache involved sheets of paper - maybe as many as thirty or forty - pasted on to a metal core and then planed, varnished and polished with pumice stone before being decorated. Research Papier Mache
In its narrow, everyday use, vegetable is a word indicating any herb that is cultivated specially for table use in whole or part, such as the turnip (root), cabbage (leaves), broccoli (flowers), peas and beans (fruit). In its widest sense it includes all living things that are not animals - trees, shrubs, herbs, ferns, mosses, seaweeds, fungi, and the microscopic diatoms.
The unit of structure, the cell, is essentially the same in both animals and plants, but the combination of the cells into tissues and organs shows marked differences.
All animals depend for their food upon material originally elaborated by plants. The green plants alone have the power to construct this basic food material from elemental substances, and physiological processes different from those of animal assimilation are rendered necessary. The fungi approach the animals in this respect: they must feed upon material that has already done service as part of the structure of other plants or of animals.
The fine divisions of roots explore the soil in search of water in which are dissolved the salts of sodium, iron, potassium, phosphorus, calcium, sulphur, etc. The hairs with which the rootlets are clothed absorb this fluid by osmosis, and it is passed upward through the long vessels of the wood bundles until it reaches the cells of the leaf. These cells contain green bodies (chloroplasts) in their protoplasm, and it is these that impart the green colour to leaves and soft shoots. In the leaf-skin (epidermis) there are innumerable pores or stomata through which surplus water from the roots is evaporated and through which atmospheric air is admitted to the spaces between the leaf-cells.
The chloroplasts in these cells have the power to utilise solar energy in decomposing the carbon dioxide of the air, and the cells retain the carbon, setting free the oxygen. Water from the roots is broken up also into its elements, hydrogen and oxygen, and with these plus carbonstarch is formed. This, converted into grape sugar, is passed from cell to cell to parts of the plant whore it is needed for the production of new cells, wood, bark, leaves, or fruit. Starch is the material from which are made all the organic substances produced by the plant.
The surplus over present requirements is stored up as reserves in seeds, enlarged roots or stems, bulbs, or tubers for renewed growth or floral display at a later season. Waste products are converted into resins, oils/wax, or alkaloids - many of these being of considerable economic value to man. Part of the water stream from the roots passes by osmosis from cell to cell, where it is necessary in order to keep the protoplasm in an active condition; any insufficiency is followed by a flagging of the tissues, the drooping of leaves and young shoots. In addition to the absorption of carbon by the protoplasts for building purposes, the leaf-cells also take up oxygen from the atmosphere and give off carbon much as animals do.
As the plant respires without lungs and assimilates without digestive organs, so also it can effect movements without a muscular system and react to external stimuli without a nervous system. It is sensitive to light and heat; many plants have distinct night and day positions for their leaves. It responds positively and negatively to the force of gravity, the root going down into the earth and the stem rising into the air. The growing tip of a stem or shoot commonly nutates, i.e. moves from side to side or in a circle or ellipse. The plant can orientate itself, i.e. take up a definite position in regard to the incidence of light or other external stimulus. These movements appear to be controlled largely by alterations in the position of the mobile chloroplasts.
The reproductive process is, in essentials, similar to that of animals, the ovules or seed-eggs in the ovary requiring to be fertilised by male sperms represented by the pollen grains produced in the anthers. The result of such fertilisation is to cause the ovule to develop into an embryo capable of further development under suitable conditions into a plant resembling the parent. Research Vegetable
Aracese is a natural order of monocotyledonous plants, mostly tropical, having the genusArum as the type. Most of the species have tuberous roots abounding in starch, which forms a wholesome food after the acrid (and even poisonous) juice has been washed out. Research Aracese
The arrowhead (Sagittaria sagittifolia) also known as Wapatoo and Is-ze-kn, is a water plant of the family Alismaceae widely distributed throughout Europe, northern Asia and North America. The stem is swollen at the base and throws out creeping stolons or runners, which produce globose winter tubers one centimetres in diameter, composed almost entirely of starch. The leaves are borne on triangular stalks that vary in length with the depth of the water in which the plant is growing. The leaves don't lie on the surface of the water, but stand above it. The leaves are large, glossy and shaped like an arrowhead. The flower stem rises directly from the root and bears several rings of buds and blossoms, three in each whorl. Each flower is composed of three outer sepals and three large petals which are white in colour with a purple base. The root of the arrowhead has long been eaten by the Chinese, Japanese and North American Indians. Research Arrowhead
Arrowroot (Maranta arundinaceae) also known as Araruta, is a herbaceousperennial of the family Marantaceae, native to the West Indies and Central America. It has a creeping rhizome with upward-curving, fleshy, cylindrical tubers covered with large, thin scales that leave rings of scars. The flowering stem reaches a height of two metres and bears creamy flowers at the ends of the slender branches that terminate the long peduncles. They grow in pairs. The numerous, ovate, glabrous leaves are from five to 25 centimetres long with long sheaths often enveloping the stem. A starch is extracted from the rhizomes and used in cooking and in herbal medicine for treating scorpion and spiderstings. Research Arrowroot
Arum is a genus of plants of the natural order Aracese. Arum maculatum (the common wake-robin, or lords-and-ladies) is abundant in woods and hedges in England and Ireland. It has acrid properties, but its corm yields a starch, which is known by the name of Portlandsago or arrow-root. At one time this was prepared to a considerable extent in Portland Island. All the species of this genus develop much heat during flowering. Research Arum
Cellulose is the cellular tissue of plants. It is a member of the carbohydrate family and is allied to starch. In plants, cellulose is normally combined with woody, fatty, or gummy substances. With some exceptions among insects, true cellulose is not found in animal tissues. Microorganisms in the digestive tracts of herbivorous animals break down the cellulose into products that can then be absorbed.
Cellulose is insoluble in all ordinary solvents and may be readily separated from the other constituents of plants. Depending on its concentration, sulphuric acid acts on cellulose to produce glucose, soluble starch, or amyloid; the last is a form of starch used for the coating of parchment paper. When cellulose is treated with an alkali and then exposed to the fumes of carbon disulphide, the solution yields films and threads. Rayon and cellophane are cellulose regenerated from such solutions.
Cellulose acetates are spun into fine filaments for the manufacture of some fabrics and are also used for photographic safety film, as a substitute for glass, for the manufacture of safety glass, and as a moulding material. Cellulose ethers are used in paper sizings, adhesives, soaps, and synthetic resins. With mixtures of nitric and sulphuric acids, cellulose forms a series of flammable and explosive compounds known as cellulose nitrates, or nitrocelluloses. Pyroxylin, also called collodion cotton, is a nitrate used in various lacquers and plastics; another, collodion, is used in medicine, photography, and the manufacture of artificial leather and some lacquers. A third nitrate, guncotton, is a high explosive. Research Cellulose
South Sea Arrowroot (Tacca pinnatifida) is a perennialherb of the natural order Taccaceae native to the East Indies and Society Islands. It has a tuberous root stock, which like that of the potato and rice is rich in starch. The leaves are large and cut into oval segments, the flowers are purplish in colour, funnel-shaped and clustered in a dense umbel and succeeded by large, pear-shaped, ribbed fruits. Strips of the leaves are plaited into hats, but mainly the plant is grown for the starch which is obtained by rasping the tubers and macerating the material in water, the resulting deposit being a fine form of arrowroot. Research South Sea Arrowroot
Tobacco is the name given to the leaves of those varieties of the Nicotiana which are prepared in different forms for use as a narcotic. It is generally manufactured for smoking, but also for chewing and as snuth.
The word tobacco is probably derived from tobaco, the name given to a peculiar Y-shaped instrument used by the old inhabitants of the island of Santo Domingo for inhaling tobacco-smoke through the nostrils. Other authorities claim that the name of the herb is derived from the Mexican word tabacco. Columbus and his party made the earliest European reference to tobacco on their return from the voyage to Cuba in 1492. The tobacco plant was first brought to Europe in 1558 by Francisco Fernandes, a Spanish physician. The wonderful healing properties which the plant was supposed to possess caused the habit of smoking and snuff-taking to spread with great rapidity over almost the whole of Europe. Jean Nicot, French ambassador to Portugal, who gives his name to the genusNicotiana, sent a present of tobacco seeds to Catherine de'Medici, and she initiated in France the snuff-taking habit as a cure for headache. This habit soon spread to Scotland and Ireland, where it remained popular long after the smoking habit had become established in England.
The smoking of tobacco was really started by English example. In 1586, Ralph Lane, the first governor of Virginia, and Sir Francis Drake brought smoking materials and implements to Sir Walter Raleigh, who very rapidly popularised the custom.
Most of the tobacco used in the 17th and 18th centuries was grown in Virginia by English colonists, whose industry was carefully protected by laws prohibiting the production of tobacco in the British Isles.
There are about 50 species of Nicotiana, most of them indigenous to America. Of these, three varieties are in general use by smokers: (1) Nicotiana tabacum, the Virginian variety, originally derived from the South or Central American seed, and now cultivated in almost all temperate and warmer climates. (2) Nicotianarustica, grown principally in Turkey, Syria, and India. This is milder in flavour, and is principally used for the manufacture of cigarettes. It burns too quickly for a pipe tobacco. (3) Nicotiana Persica, or Persian tobacco, which is good for pipe tobacco, but not sufficiently uniform for the manufacture of cigars.
The tobacco plant is a coarse, rank-growing annual. Its stem is simple and unbranched, and grows to a height of about two meters, terminating in a bunch of yellow or rose-coloured flowers. The East Indian variety is slightly different, producing a green tobacco from a smaller plant. It is derived from the Mexican seed, and is also cultivated in Southern Germany and Hungary.
The tobacco plant can be cultivated in every part of the world, but with widely varying measures of success. It is grown in British gardens for the sake of its flowers. Clayey, moist soils produce tobaccos which are dark brown or reddish in colour when cured. Bright and yellow tobaccos are grown on sandy soils, and the leaf of this variety is thinner. The bright tobacco produced in Virginia and North Carolina is all grown in loose sandy soil with a clay subsoil.
The tobacco seeds are generally sown in nursery beds, and set out later. About 3OOOOO to 4000000 go to the ounce, and this produces about 40,000 plants, for which 50 square yards of nursery bed are sufficient. The seeds are sown at the end of March or beginning of April, in rich, heavy soil which has been carefully prepared and fertilised. The seedlings remain in the nursery from fifty to sixty days, during which time the fields are well tilled and manured. Transplanting is done on a warm, rainy day, and the young plants set in ridges varying from one to four feet in width. Ridges of one to one and a half feet are most usual in Cuba and Sumatra, as the wider ridge produces a leaf which is too coarse for the purpose of cigar-making.
The crop takes another two months until it flowers, and at this stage the buds are pinched off or 'topped', and some of the leaves pruned, so that only a certain number are left to ripen. For cigar-tobacco, from 15 to 20 leaves are left on the plant; for the best smoking tobaccos, 10 to 12 leaves. Plants which have been topped form suckers, and in Florida these are left to produce a second, although inferior, sucker crop.
The leaves take about 35 days to ripen after the plants are topped and pruned. The ripening leaf changes from a dark to a lighter yellowish-green colour, and is often mottled and becomes gummy. The ripe leaf cracks and creases when folded. The lower leaves ripen first, and for the best tobaccos the leaves are picked singly ;
as they ripen. For the bulk of the tobaccos, however, the whole plant is cut when the middle leaves are ripe. Warm, cloudy days are best for cutting, and the plants are not gathered in hot sunshine or when they are wet from rain or dew.
After harvesting the plants are left in the open to wilt, and are then conveyed to the drying-house or ventilating-barn, where they are straddled across tiers of poles and dried in a temperature which is raised to 170° F for four to five days. On damp days the moisture is allowed to penetrate into the drying-house to make the leaves pliable.
The plants are then taken down and stripped, and the leaves sorted into firsts, seconds, and lugs - the name given to the inferior leaves. They are formed into hands containing ten to twelve leaves, and these are left in heaps and fermented at a temperature of about 130° F for from three to four weeks. The heaps are shuffled from time to time, to allow all the leaves to assume a uniform brown tint. This process is called the fermenting or sweetening process. In the non-fermenting processes the leaves are simply sun-cured, or sun-dried, and this tobacco is used chiefly for chewing tobaccos. In the fermenting process the starch and sugar in the leaf are decomposed, but they are retained in the sun-dried process. Lastly, the leaves are packed carefully in hogsheads for shipment.
Tobacco leaf is used for making into various smoking mixtures, roll tobacco, cake or plug, cigars, cigarettes, and snuff. For snuff the leaf requires very careful fermentation during several weeks. It is ground up and flavoured so as to produce the greatest possible amount of free ammonia, free nicotine, and other aromatic scents. Syria produces and manufactures a smoking tobacco which is known as Latakia. It is similar to Turkish-grown tobacco, but differently treated. The plants are not topped. The seeds as well as the leaves are included in the curing, this taking place in the smoke of a fire of evergreen-oak, which gives a black colour and a peculiarly strong flavour to the tobacco.
Tobacco for pipe-smoking is mostly grown in the USA, the chief states being Kentucky, North Carolina, and Virginia. Louisiana grows a dark, almost black, and very strong tobacco known as perique. Cigarette tobaccos are principally imported from Virginia, and Turkish and Egyptian cigarettes are also in great demand. The Egyptian cigarette is made from Turkish leaf, as the cultivation of tobacco in Egypt was prohibited in 1891. The best cigar tobaccos are grown in Cuba. A very good cigar leaf is also produced in Jamaica, Sumatra and North Borneo.
Since the introduction of tobacco into England, it has been subject to continuous legislation and import duties. In the early days a certain quantity of tobacco was grown in England for domestic consumption, and quite a considerable trade was done with Turkey, which, at that time, imported her tobacco supplies from England. Queen Elizabeth imposed a tax of 2d per Ib on imported tobacco. In 1621 James I increased this to 6s. lOd. per Ib.
During the American War of Independence, England's source of supply and the revenue there from were temporarily suspended, and tobacco was again widely planted in England, although the prohibition laws had not been repealed. These laws had never applied to Scotland, and to reimburse themselves for the loss of revenue during the non-importation of American tobacco, the Government purchased the Scotch tobacco crops at the fixed price of 4d. per Ib., thus temporarily creating a Government monopoly in tobacco. The ban on the growing of tobacco in the British Isles, renewed in 1782 in England, and in 1830 in Ireland, was modified later in the 19th century, and tobacco can now be cultivated under licence.
During the late 20th century an American-led ban on tobacco smoking supposedly because of the connection with lung cancer, but more likely under pressure from the pharmaceutical lobby, in public places slowly extended to Britain, with Scotland banning the smoking of tobacco in pubs and clubs in 2005. Research Tobacco
A tuber is a thickened, fleshy or scaly portion of a plant's underground stem which serves as a store-house for starch and other plant food, allowing the pant to survive periods of frost or drought when its above ground parts are destroyed. Research Tuber
The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
Abbreviations
Research Papier Mache
