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Encyclopedia Britannica - Main :: NUM-ORC |
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NUT (0. Eng. knutu, cf. Dutch noot, Ger. Nuss; allied with Gael. cno; it is not of the same form as Lat. nux) , a term applied to that class of fruit which consists generally of a single kernel enclosed in a hard shell. Botanically speaking, nuts are one-celled fruits with hardened pericarps, sometimes more or less enveloped in a cupule or cup, formed by the aggregation of the bracts as in the hazel and the acorn. In commerce, however, tale term has a wider application and embraces many fruits having hard woody indehiscent shells or coverings without reference to their enclosed seeds or kernels, besides leguminous pods, and even tuberous roots. A great
starch
list
On the following page is set out an alphabetical enumeration of the more important nuts, and of products passing under that name, used either as articles of food or as sources of oil. Name. Source. Locality. Remarks. Almond Amygdalus communis, S. Europe . . . Food, oil. Almond (bitter) . var. dulcis W. Europe (Britain) Oil. Ar nut or earth nut Amygdalus communis, Tropics, especially Food. Bambarra ground nut var. amara Africa Food. Ben nut Tubers of Bunium flexuo- India Oil. Bitter nut . . . . sum and other species N. America . . . See HICKORY. Brazil nut . . . . Voandzeia subterranea S. America Food, oil. Bread nut . . . Moringa pterygosperma W. Indies Food. Butter or Souari nut (a winged seed) Guiana Food. Cahoun nut . . . Carya amara (swamp Honduras Oil. Candle nut. . . hickory) S. Sea Islands . Oil. Cashew nut . . Bertholletia excelsa . . W. Indies and Tropical Food, oil. Chestnut . Brosimum Alicastrum . America Food. Cob, filbert, or hazel Caryocar nuciferum . . S. Europe . See HAZEL. Cob nut of Jamaica . Attalea Cohune . . . Europe (Britain), &c. Food. Coco-nut . . . . Aleurites triloba . W. Indies and Tropical Food, oil. Cola nut . . . . Anacardium occidentale . America Food. Dika nut . . . Castanea vesca . . . Tropics Food, oil. Ginkgo nut Corylus Avellana . . . W. Africa Food, oil. Ground nut or pea nut Omphalea diandra . . W. Africa See GROUND NUT. Hickory nut . . . Cocos nucifera . . . Japan, China . . . See HIcxoRY. Hog nut . . . . Cola acuminata . . . Tropics Eaten by animals. Jesuit's nut . . . Irvingia Barteri . . . N. America . . . Food. Mocker nut . . Ginkgo biloba (seed) . . N. America . . . See HICKORY. Moreton Bay chestnut Arachis hypogaea . . S. Europe Food. Nutmeg . . Carya alba . . . . N. America . . . Spice. See NUTMEG. Nutmeg (wild). . . Carya porcina. . . . Australia Spice. See NUTMEG. Olive nut . . . . Trapa natano . . . . E. Indies Food. Palm nut . . . . Carya tomentosa . Tropics Oil. See PALM. Pecan nut . . . . Castanospermum australe E. Indies . . . . Food, oil. See HICKORY. Pekea nut . . . . Myristica moschata . . W. Africa . . . . Food. Physic nut . . . . Myristica fatua, Me tom- N. America . . . Oil. Pine nut . . . . entosa, &c. Guiana . . . Food. Pistachio nut . . . Eleocar pus Ganitrus, &c. Tropical America . . Food. Quandang nut . . . Elaeis guineensis . . Italy . . . Food. Ravensara nut. . . Carya olivaeformis . . S. Europe, &c.. . . Spice. Rush nut . . . . Caryocar butyrosum . . Australia . . . . Food. Sapucaya nut . . . Curcas purgans . . . Food. Tahiti chestnut . . Finns Pinea, &c. . . Food. Walnut
Water chestnut . . Fusanus acurninatus . . Food. Agathophyllumarornaticum Madagascar . . . Cyperus esculentus (tubers) S. Europe, &c.. . . Lecythis 011aria . . . Brazil . . . Inocar pus edulis . . . S. Sea Islands . . . Juglans regia . Asia, Europe . Various species of Trapa S. Europe, India, &c. . The application of the term nut to many of these products is purely arbitrary, and it is obvious that numerous other bodies not known commercially as nuts might with equal propriety be included in the list
There remain'to be enumerated a number of nuts of commercial value for turnery and ornamental purposes, for medicinal use, and for several miscellaneous applications in the arts. These include: Name. Source. Locality. Remarks. Betel nut . . . . Areca Catechu E. Indies ... . Bladder nut . . . Staphylea pinnata S. Europe Necklaces. Boomah nut . . . Pycnocoma macrophylle . Africa Tanning. Bonduc nut . . . Guilandina Bonduc . . India Medicine, beads. Clearing nut . . . Strychnos potatorum . India Clearing water. Coquilla nut . Attalea funifera . . Brazil . . . . Turnery. Corozo nut or vegetable Phytelephas macrocarpa . Tropical S. America See PALM. ivory Dipterix odorata . . . Tropical S. America Perfume. Cumara nut (Tonka Acrocomia selerocarpa . S. America . Beads. bean) Aesculus Hippocastanum S. Europe . . . . Starch
Grugru nut. . . . Semecarpus Anacardium E. Indies . . . . Marking ink and varnish. Horse chestnut . . Quercus infectoria . . Levant Dyeing and ink making, Marking nut . . . Strychnos Nux-Vomica . E. Indies . . . . See GALLS
Nut galls
Poison nut . . . . Ophiocaryou paradoxum . S. America . . . . VOMICA. Sassafras nut . . . Sapindus Saponaria . . W. Indies . . . Aromatic. Snake nut . . . . Curiosity. Soap nut . . . . Washing; ornamental importance are or will be separately noticed, and here further allusion is only made to a few which form current articles of commerce, not otherwise treated of. The bread nut of Jamaica is the fruit of a lofty tree, Brosimum Alicastrum. It is about an inch in diameter , and encloses a single seed, which, roasted or boiled, is a pleasant and nutritious article of food.The souari or surahwa nut, called also the " Butter nut of Demerara," and by fruiterers the " Suwarrow nut," is the fruit of Caryocar nuciferum, a native of the forests of Guiana, growing 8o ft. in height. This is perhaps the finest of all the fruits called nuts. The kernel is large, soft, and even sweeter than the almond, which it somewhat resembles in taste. The few that are imported come from Demerara, and are about the size of an egg, somewhat kidney-shaped, of a rich reddish-brown colour, and covered with large rounded tubercles. The pekea nut, similar in appearance and properties, ,is the produce of Caryocar butyrosum, growing in the same regions of tropical America.The Jamaica cob nut is the produce of a euphorbiaceous tree, Omphalea diandra, the seeds of which resemble in taste the ordinary cob or hazel nut. The seed, however, contains a deleterious embryo, which must not be eaten.Cola, kola or goora nuts are the seeds of Cola acuminata (Sterculiaceae), a tree, native of tropical Africa, now introduced into the West Indies and South America. The nuts form an important article of commerce through-out Central Africa, being used over a wide area as a kind of stimulant condiment. The nuts, of which there are numerous varieties, are found to contain a notable proportion of theine, as much as 2.13 %, besides theobromine and other important food-constituents, to which circumstances, doubtless, their valuable properties are due. Coquilla nuts, the hard inner portion (" stone ") of the palm, Attalea funifera, the piassaba of Brazil, are highly valued for turnery purposes. They have an elongated oval form, 3 to 4 in. in length, and being intensely hard they take a fine polish, displaying a richly streaked brown colour. The marking nut, Semecarpus Anacardium, is a fruit closely allied in its source and properties to the cashew nut (q.v.). The marking nut is a native of the East
Physic nuts are the produce of the euphorbiaceous tree, Curcas purgans, whence a valuable oil, having similar purgative properties to castor oil, is obtained. The plant is a native of South America, but is now found throughout all tropical countries. Pine nuts are the seeds of several species of Pinus, eaten in the countries of their growth, and also serving to some extent as sources of oil. Of these the most important are the stone pine, Pinus Pinea, of Italy and the Mediterranean coasts, and the Russian stone pine, Pinus Cembra. The Pinus Sabiniana of California and P. Gerardiana of the Himalayas similarly yield edible seeds. These seeds possess a pleasant, slightly resinous flavour. Ravensara nuts, the fruit of Agathophyllum aromaticum (Lauraceae), a native of Madagascar, is used as a spice under the name of the Madagascar clove nutmeg. The Sapucaya nut, a native of Brazil, is seen occasionally in fruit-shops. It is produced by a large tree, Lecythis 011aria, or " cannon-ball tree." Its specific name is taken from the large urn-shaped capsules, called " monkey-pots " by the inhabitants, which contain the nuts. The sapucaya nut has a sweet flavour, resembling the almond, and if better known would be highly appreciated. It is, however, scarce, as the monkeys and other wild animals are said to be particularly fond of it. This nut, which is of a rich amber-brown, is not unlike the Brazil nut, but it has a smooth shell furrowed with deep longitudinal wrinkles. Soap nuts are the fruits of various species of Sapindus, especially S. Saponaria, natives of tropical regions. They are so called because their rind or outer covering contains a principle, saponine, which lathers in water, and so is useful in washing. The pods of Acacia concinna, a native of India, possess the same properties, and are also known as soap nuts. End of Article: NUT (0. Eng. knutu, cf. Dutch noot, Ger. Nuss; allied with Gael. cno; it is not of the same form as Lat. nux) If you wish, you can link directly to this article.
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