Britannica
Encyclopedias since 1768  
ABCDEFGHIJKLMNOPQRSTUVWXYZ0-9
Calais, Treaty of ... Calced Carmelites
Calais, Treaty of
(from the article "Edward III") ...Paris. After this unsuccessful campaign he was glad to conclude preliminaries of peace at Brittany (May 8, 1360). This treaty, less onerous to France than that of London, took its final form in the Treaty of Calais, ratified by both ...
Calaisian Substage
(from the article "Holocene Epoch") ...Transition"). In The Netherlands the barrier beaches re-formed close to the present coastline, and widespread tidal flats developed to the interior. These are known as the Calais Beds (or Calaisian) from the definition in Flanders by Dubois. In the protected ...
Calama
city, northern Chile, on the Rio Loa in an extremely arid region. It lies on the western slope of the Andes at an altitude of 7,435 feet (2,266 metres) and is linked to Antofagasta, 125 miles (200 km) southwest, by ...
calamancos
(from the article "quilting") Thrifty colonial women would have recycled precious fabric scraps to make and repair garments and bedding. However, the earliest surviving American quilts tend to be wholecloth calamancos, in which the glazed wool top, often of imported fabric, was layered with ...
Calamander
(from the article "ebony") ...branches and oblong leaves. D. montana of India yields a yellowish gray, soft but durable wood. D. quaesita is the tree from which is obtained the wood known in Sri Lanka as Calamander. Its closeness of grain, great hardness, and ...
Calamian Group
islands lying between Mindoro and Palawan, west-central Philippines. The group comprises Busuanga, Culion, and Coron islands and about 95 lesser coral isles and islets. The main islands are quite hilly and are densely settled, with relatively stable populations engaged in ...
calamine
(from the article "calamine") either of two zinc minerals. The name has been dropped in favour of the species names hemimorphite (q.v.; hydrous zinc silicate) and smithsonite (q.v.; zinc carbonate).for more specific content on this topichemimorphite
calamine brass
alloy of copper with zinc, produced by heating fragments of copper with charcoal and a zinc ore, calamine or smithsonite, in a closed crucible to red heat (about 1,300° C, or 2,400° F). The ore is reduced to a zinc ... [2 Related Articles]
calamistrum
(from the article "spider") ...pair having been either lost or reduced to a nonfunctional cone (colulus) or flat plate (cribellum), through which open thousands of minute spigots. Spiders with a cribellum also have a comb (calamistrum) on the metatarsus of the fourth leg. The ...
Calamitaceae
(from the article "Equisetopsida") ...1 metre (3 feet) tall, with small, wedge-shape leaves; 2 families: Sphenophyllaceae and Cheirostrobaceae.Two families: Calamitaceae, extinct tree horsetails; and Equisetaceae, herbaceous living horsetails and fossil allies with needlelike leaves in whorls along the stem; 15 extant species in ...
Calamites
genus of tree-sized, spore-bearing plants that lived during the Carboniferous and Permian periods (about 360 to 250 million years ago). Calamites had a well-defined node-internode architecture similar to modern horsetails, and its branches and leaves emerged in ... [1 Related Articles]
Calamity Jane
legendary American frontierswoman whose name was often linked with that of Wild Bill Hickok. The facts of her life are confused by her own inventions and by the successive stories and legends that accumulated in later years. [1 Related Articles]
Calamonastes
(from the article "wren-warbler") ...their tails cocked up. The name also denotes certain birds of the family Maluridae that are found in Australia and New Zealand. Among the sylviid wren-warblers are those of the African genus Calamonastes (sometimes included in Camaroptera), in which the ...
calamus
(from the article "bird") The typical contour feather consists of a tapered central shaft, the rachis, with paired branches (barbs) on each side. An unbranched basal section of the rachis is called the calamus, part of which lies beneath the skin. The barbs, in ...
Calamus
(from the article "palm") ...continental bounds are Chamaerops in Europe and Africa, Elaeis (oil palm) and Raphia (raffia palm, or jupati) in Africa and America, and Borassus (palmyra palm), Calamus (rattan palm), Hyphaene (doum palm), and Phoenix (date palm) in Africa and Asia. Numbers ...
Calamus caesius
(from the article "palm") ...or ivory, palm (Phytelephas aequatorialis) grown for vegetable ivory; and a fibre palm (Aphandra natalia). In Southeast Asia the production of rattan from species of Calamus (C. caesius, C. manan, and C. trachycoleus) is a promising industry. Commercial production of ...
Calamus erinaceus
(from the article "palm") ...in some New World areas. Palms are dominant in another type of vegetation on the landward fringe of mangrove swamps in the western Malay Archipelago, where Oncosperma tigillarium and Calamus erinaceus (and, in Borneo, Daemonorops longispathus) are found. In the ...
Calamus manan
(from the article "palm") ...(Phytelephas aequatorialis) grown for vegetable ivory; and a fibre palm (Aphandra natalia). In Southeast Asia the production of rattan from species of Calamus (C. caesius, C. manan, and C. trachycoleus) is a promising industry. Commercial production of sago from trunks ...
Calamus trachycoleus
(from the article "palm") ...grown for vegetable ivory; and a fibre palm (Aphandra natalia). In Southeast Asia the production of rattan from species of Calamus (C. caesius, C. manan, and C. trachycoleus) is a promising industry. Commercial production of sago from trunks of
Calamy, Edmund
English Presbyterian theologian who contributed significantly to the writings of Smectymnuus (1641), the pen name under which was published the Calvinists' famous reply to the Anglican apology for bishops and liturgical worship in the church. The leader of the Presbyterian ...
calandria
(from the article "nuclear reactor") ...only by other countries. The result of this policy was CANDU-the line of natural uranium-fueled reactors moderated and cooled by heavy water. A reactor of this kind consists of a tank, or calandria vessel, containing cold heavy water at normal ...
Calanoida
(from the article "crustacean") ...limbs; no abdominal limbs; larva usually a nauplius; free-living and parasitic; worldwide; marine, freshwater, and some semi-terrestrial; at least 8,500 species.Antennules long, usually held stiffly at right angles to the length of the body; heart present; thorax articulates with ...
Calanthe
genus of orchids, family Orchidaceae, containing about 150 species of primarily terrestrial plants native to Asia and South Africa, with one Central American and West Indian species. Some species lose their leaves during the dry season.
Calanus
(from the article "crustacean") Copepods and krill are important components of most marine food webs. Planktonic (i.e., drifting) copepods, such as Calanus, and members of the order Euphausiacea (euphausiids), or krill, may be present in such great numbers that they discolour large areas of ...
Calarasi
city, capital of Calarasi judet (county), southeastern Romania. It is located at the border with Bulgaria on the Borcea arm of the Danube and along Lake Calarasi, about 60 mi (100 km) east-southeast of Bucharest. Calarasi is first documented in ...
Calarca
city, northeastern Quindio department, Colombia, on the western slopes of the Andean Cordillera (mountains) Central, at 5,039 ft (1,536 m) above sea level. Like neighbouring Armenia, the departmental capital, it is an important coffee-growing centre. Calarca is on the major ...
Calas, Jean
Huguenot cloth merchant whose execution caused the philosopher Voltaire to lead a campaign for religious toleration and reform of the French criminal code. [3 Related Articles]
Calasanz, Saint Joseph
priest, teacher, patron saint of Roman Catholic schools, and founder of the Ordo Clericorum Regularium Pauperum Matris Dei Scholarum Piarum (Order of Poor Clerks Regular of the Mother of God of the Pious Schools), popularly called Piarists. The Piarists are ...
calash
(from Czech kolesa: "wheels"), also called Caleche, or Barouche, any of various open carriages, with facing passenger seats and an elevated coachman's seat joined to the front of the shallow body, which somewhat resembled a small boat. A ...
Calasso, Roberto
Italian editor, publisher, and writer whose book Le nozze di Cadmo e Armonia (1988; The Marriage of Cadmus and Harmony) achieved international critical and popular acclaim.
Calastre, Sierra de
(from the article "Andes Mountains") ...all exceed 19,000 feet. The two main ranges and several volcanic secondary chains enclose depressions called salars because of the deposits of salts they contain; in northwestern Argentina, the Sierra de Calalaste encompasses the large Antofalla Salt Flat. Volcanoes of ...
Calatrava, Order of
major military and religious order in Spain. The order was originated in 1158 when King Sancho III of Castile ceded the fortress of Calatrava to Raymond, abbot of the Cistercian monastery of Fitero, with instructions to defend it against the ... [2 Related Articles]
Calatrava, Santiago
Spanish architect known for his sculptural bridges and buildings. [3 Related Articles]
Calaurian Amphictyony
(from the article "amphictyony") ...of water supplies; the hieromnemones could punish offenders and even proclaim a sacred war against them. Other important amphictyonies were the Delian and, in the Archaic period, the Calaurian (composed of states around the Saronic Gulf).
calaveras
(from the article "folk art") ...stock characters. Block printing was also used to produce games, announcements for traveling shows, and forms for certificates. The English broadsheets and the Mexican calaveras (literally "skulls," a category of prints, sometimes made from lead cuts) offer ...
calaverite
a gold telluride mineral (AuTe2) that is a member of the krennerite group of sulfides and perhaps a structurally altered form (paramorph) of krennerite (q.v.); it generally contains some silver replacing gold. Calaverite is most commonly found in veins that ...
Calayan
(from the article "Babuyan Islands") ...of strong winds discourage the cultivation of rice or corn (maize). Instead, root crops, particularly sweet potatoes, are widely grown, and the surplus supports a small livestock industry. Calayan is the largest town and only port with regular interisland shipping ...
Calbayog
city, on the western coast of Samar Island, Philippines. The city lies along the Samar Sea at the mouth of the Calbayog River. It is a religious and educational centre, with fishing and mat-making the main industries. Calbayog is a ...
Calbovista subsculpta
(from the article "Lycoperdaceae") ...of the fruiting body (basidiocarp), are edible before maturity, at which time the internal tissues become dry and powdery. Puffs of spores discharge when the fruiting structure is disturbed. Calbovista subsculpta, an edible puffball, is found along old road beds ...
calc-alkali basalt
(from the article "basalt") Basalts may be broadly classified on a chemical and petrographic basis into two main groups: the calc-alkali and the alkali basalts. Calc-alkali basaltic lavas are characterized by calcic plagioclase with augite, pigeonite or hypersthene, and olivine as the dominant mafic ...
calc-alkalic series
(from the article "igneous rock") ...the subalkaline and alkaline rocks. The subalkaline rocks have two divisions based mainly on the iron content, with the iron-rich group called the tholeiitic series and the iron-poor group called calc-alkalic. The former group is most commonly found along the ...
calcaneus
(from the article "tarsal") ...above with the bones of the lower leg to form the ankle joint. The other six tarsals, tightly bound together by ligaments below the talus, function as a strong weight-bearing platform. The calcaneus, or heel bone, is the largest tarsal ...
calcareous ooze
(from the article "ooze") ...distant enough from land so that the slow but steady deposition of dead microorganisms from overlying waters is not obscured by sediments washed from the land. The oozes are subdivided first into calcareous oozes (containing skeletons made of calcium carbonate) ...
calcareous ring
(from the article "echinoderm") ...plates with holes to exquisitely symmetrical wheels, and are usually numerous; one tropical species, for example, has more than 26,000,000 ossicles in its body wall. A ring of plates, called the calcareous ring, surrounds the tube leading from the mouth ...
calcareous rock
(from the article "metamorphic rock") ...rich in potassium (K), aluminum (Al), silicon (Si), iron (Fe), magnesium (Mg), and water (H2O), with lesser amounts of manganese (Mn), titanium (Ti), calcium (Ca), and other constituents. Calcareous rocksare formed from a variety of chemical and detrital sediments such ...
calcareous sinter
(from the article "sinter") Calcareous sinter, sometimes called tufa, calcareous tufa, or calc-tufa, is a deposit of calcium carbonate, exemplified by travertine. So-called petrifying springs, not uncommon in limestone districts, yield calcareous waters that deposit a sintery incrustation on objects exposed to their action. ...
calcareous spicule
(from the article "sponge") Calcareous spicules, characteristic of the Calcarea, are composed chiefly of calcium carbonate in crystalline forms; e.g., calcite, aragonite. Most calcareous spicules have one axis (monoaxon), which is usually pointed at both ends; these spicules are called oxeas. Triaxons have three ...
calcareous sponge
any of a class (Calcarea) of sponges characterized by skeletons composed entirely of calcium carbonate spicules (needlelike structures). Calcareous sponges occur mainly on the rocky bottoms of the continental shelves in temperate, shallow waters; they are usually dull in colour. ... [2 Related Articles]
calcarine fissure
(from the article "primate") ...characteristics reflective of their common ancestry. When compared with body weight, the primate brain is larger than that of other terrestrial mammals, and it has a fissure unique to primates (the Calcarine sulcus) that separates the first and second visual ...
Calcaronea
(from the article "sponge") ...spicules or of a calcareous network; genera include Clathrina, Leucetta, Petrobiona (a pharetronid).Larva called amphiblastula (oval in shape with front half of flagellated cells, rear half without flagellated cells); flagella ...
Calced Carmelites
(from the article "Teresa of Avila, Saint") ...a jurisdictional dispute erupted between the friars of the restored Primitive Rule, known as the Discalced (or "Unshod") Carmelites, and the observants of the Mitigated Rule, the Calced (or "Shod") Carmelites. Although she had foreseen the trouble and endeavoured to ...
© 2006 Encyclopædia Britannica Australia Ltd
Encyclopedia Home | World Atlas