Denbighshire: …the county in 1645, and Denbigh Castle was one of the last Welsh strongholds to surrender to the Parliamentary forces, who razed it. The spread of Nonconformism (non-Anglican Protestantism) during the 18th century and the development of coastal resorts during the 19th century mark the later history of Denbighshire. During…

Denbighshire, county of northern Wales extending inland from the Irish Sea coast. The present county of Denbighshire includes the Vale of Clwyd along the River Clwyd and an inland area between the Clwydian Range in the east and the Clocaenog Forest in the west that ascends to the Berwyn mountains

Teapot Dome Scandal: …the secretary of the navy, Edwin Denby, had signed all the leases, he was cleared of all charges.

dance criticism: The 20th century: The American dancer and poet Edwin Denby, who from 1936 to 1942 wrote criticism for the influential magazine Modern Music (published 1924–46), proclaimed Balanchine “the greatest choreographer of our time.” Through his nuanced analyses Denby taught several generations of thoughtful theatregoers to see much more on dance stages than was…

Judi Dench is a British actress known for her numerous and varied stage roles and for her work in television and in a variety of films. Dench studied at the Central School of Speech Training and Dramatic Art in London. In 1957 she gave her first important critically acclaimed performance, as

Judi Dench is a British actress known for her numerous and varied stage roles and for her work in television and in a variety of films. Dench studied at the Central School of Speech Training and Dramatic Art in London. In 1957 she gave her first important critically acclaimed performance, as

Hans Denck was a German theologian and Reformer who opposed Lutheranism in favour of Anabaptism, the Reformation movement that stressed the baptism of individuals upon reaching adulthood. Denck became rector of St. Sebaldus School in Nürnberg in 1523 but was expelled from the city as a heretic two

Nippon Telegraph and Telephone Corporation (NTT), Japanese telecommunications company that almost monopolizes Japan’s domestic electronic communications industry. It is Japan’s largest company and one of the largest companies in the world. NTT was established in 1952 as a public corporation and the

Dandarah, agricultural town on the west bank of the Nile, in Qinā muḥāfaẓah (governorate), Upper Egypt. The modern town is built on the ancient site of Ta-ynt-netert (She of the Divine Pillar), or Tentyra. It was the capital of the sixth nome (province) of pharaonic Upper Egypt and was dedicated to

grouse: …of evergreen forests is the blue grouse (Dendragapus obscurus), a big, dark bird, plainer and longer-tailed than the spruce grouse and heavier than the ruffed grouse.

DENDRAL, an early expert system, developed beginning in 1965 by the artificial intelligence (AI) researcher Edward Feigenbaum and the geneticist Joshua Lederberg, both of Stanford University in California. Heuristic DENDRAL (later shortened to DENDRAL) was a chemical-analysis expert system. The

mamba, (genus Dendroaspis), any of four species of large, arboreal, venomous snakes that live throughout sub-Saharan Africa in tropical rainforests and savannas. Mambas are slender, agile, and quick and are active during the day. They have smooth scales, flat-sided (coffin-shaped) heads, long front

tree snake: …few colubrid snakes is the green tree snake Dendrelaphis punctulatus, found in the northern and eastern regions, which has a tiny head and thin foreparts and may reach a length of 1.8 metres (5.9 feet). Flying snakes, mangrove snakes, vine snakes, and whip snakes are sometimes called tree snakes.

nanotechnology: Drug delivery: …these applications is an organic dendrimer. A dendrimer is a special class of polymeric molecule that weaves in and out from a hollow central region. These spherical “fuzz balls” are about the size of a typical protein but cannot unfold like proteins. Interest in dendrimers derives from the ability to…

animal development: The brain and spinal cord: …produce outgrowths called axons and dendrites, by which the cells of the nervous system establish communication with one another to form a functional network. Some of the outgrowths extend beyond the confines of the brain and spinal cord as components of nerves; they establish contact with peripheral organs, which thus…

mineral: Crystal habit and crystal aggregation: …small spherical or hemispherical groups; dendritic, in slender divergent branches, somewhat plantlike; mammillary, large smoothly rounded, masses resembling mammae, formed by radiating crystals; botryoidal, globular forms resembling a bunch of grapes; colloform, spherical forms composed of radiating individuals without regard to size (this includes botryoidal, reniform, and mammillary forms);

mononuclear phagocyte system: …precursors develop into monocytes and dendritic cells, phagocytic cells that are released into the bloodstream. Some monocytes and dendritic cells remain in the general blood circulation, but most of them enter body tissues. In tissues, monocytes develop into much larger phagocytic cells known as macrophages. The great majority of macrophages…

valley: Drainage patterns: Dendritic patterns (see figure), so called because of their similarity to branching organic forms, are most common where rocks or sediments are flat-lying and preferential zones of structural weakness are minimal. The conveyance properties of a dendritic network are analogous to blood circulation systems and…

keratitis: In dendritic (branching) keratitis, or dendritic ulcer, the cornea is inflamed by infection with the herpes simplex (cold sore) virus or herpes zoster (shingles) virus. The lesions, as the name suggests, follow branching lines, along which minute blisters may form and break, leaving raw areas. The…

Alzheimer disease: Neuritic plaques and neurofibrillary tangles: The presence of neuritic plaques and neurofibrillary tangles in the brain are used to diagnose Alzheimer disease in autopsy. Neuritic plaques—also called senile, dendritic, or amyloid plaques—consist of deteriorating neuronal material surrounding deposits of a sticky protein called amyloid beta

nervous system: Dendrites: …provided by specialized structures called dendritic spines, which, by providing discrete regions for the reception of nerve impulses, isolate changes in electrical current from the main dendritic trunk.

mamba, (genus Dendroaspis), any of four species of large, arboreal, venomous snakes that live throughout sub-Saharan Africa in tropical rainforests and savannas. Mambas are slender, agile, and quick and are active during the day. They have smooth scales, flat-sided (coffin-shaped) heads, long front

mamba: The East African green mamba (D. angusticeps) of East and South Africa, Jameson’s mamba (D. jamesoni) of Central Africa, and the West African green mamba (D. viridis) are all more timid than the black mamba and have not been reported to attack humans. Like the black…

mamba: …of East and South Africa, Jameson’s mamba (D. jamesoni) of Central Africa, and the West African green mamba (D. viridis) are all more timid than the black mamba and have not been reported to attack humans. Like the black mamba, they will flatten their necks into a narrow hood as…

black mamba, (Dendroaspis polylepis), species of mamba snake known for its large size, quickness, and extremely potent venom. It lives in sub-Saharan Africa and is one of the continent’s most dangerous snakes. The average black mamba is 2–2.5 metres (6.6–8.2 feet) long, with a maximum length of 4.3

mamba: …of Central Africa, and the West African green mamba (D. viridis) are all more timid than the black mamba and have not been reported to attack humans. Like the black mamba, they will flatten their necks into a narrow hood as a defensive posture. Green mambas prey upon birds, small…

frog and toad: Skin toxins: Dendrobates and Phyllobates are small, diurnal frogs living in Central and South America that are brilliantly coloured solid red, yellow, or orange or patterned with bold stripes or crossbars. These bright patterns are believed to act as warning colours to ward off predators. One nonpoisonous…

frog and toad: Breeding behaviour: The small Central American Dendrobates pumilio calls from the leaves of herbaceous plants. Intrusion into a territory of one calling male by another results in a wrestling match that terminates only after one male has been thrown off the leaf. Males of the Central American dendrobatid Colostethus inguinalis have…

poison frog, (family Dendrobatidae), any of approximately 180 species of New World frogs characterized by the ability to produce extremely poisonous skin secretions. Poison frogs inhabit the forests of the New World tropics from Nicaragua to Peru and Brazil, and a few species are used by South

poison frog, (family Dendrobatidae), any of approximately 180 species of New World frogs characterized by the ability to produce extremely poisonous skin secretions. Poison frogs inhabit the forests of the New World tropics from Nicaragua to Peru and Brazil, and a few species are used by South

Dendrobium, genus of as many as 1,500 species of epiphytic orchids (family Orchidaceae). Dendrobium species are native to tropical and subtropical Asia, many Pacific islands, and Australia. Many are cultivated as ornamentals, and some are important in the floral industry. Popular members of the

Dendrobium: …of the genus include the pigeon orchid (Dendrobium crumenatum), a white-flowered species; the bull orchid (D. taurinum), a Philippine species with twisted, hornlike petals; and the cucumber orchid (D. cucumerinum), an Australian species with unusual, cucumber-like leaves.

Dendrobium: …twisted, hornlike petals; and the cucumber orchid (D. cucumerinum), an Australian species with unusual, cucumber-like leaves.

Dendrobium: …crumenatum), a white-flowered species; the bull orchid (D. taurinum), a Philippine species with twisted, hornlike petals; and the cucumber orchid (D. cucumerinum), an Australian species with unusual, cucumber-like leaves.

bamboo: …of several bamboo species, especially Dendrocalamus strictus and Bambusa bambos, are used to make fine-quality paper. The jointed stems of bamboo have perhaps the most numerous uses; the largest stems supply planks for houses and rafts, while both large and small stems are lashed together to form the scaffoldings used…

bryophyte: Annotated classification: Order Dendrocerotales Distributed primarily in tropical regions; containing 1 family with 4 genera, Dendroceros, Megaceros, Nothoceros, and Phaeomegaceros. Order Notothyladales Consists of a single family and about 5 genera, including Notothylas. Order

dendrochronology, the scientific discipline concerned with dating and interpreting past events, particularly paleoclimates and climatic trends, based on the analysis of tree rings. Samples are obtained by means of an increment borer, a simple metal tube of small diameter that can be driven into a

woodcreeper: …others of its genus, the plain-brown woodcreeper (Dendrocincla fuliginosa), of Honduras to northeastern Argentina, often follows marching ant columns, eating the insects and other creatures routed out by the ants. See also scythebill.

Urticaceae: Major genera and species: …wood nettles (Laportea), and the Australian stinging trees (Dendrocnide). Stinging nettle is common in herbal medicine, and its young leaves can be cooked and eaten as a nutritious potherb.

woodcreeper: A typical form is the barred woodcreeper (Dendrocolaptes certhia), of southern Mexico to northern Brazil; it is 28 cm (11 inches) long, is heavy-billed, and has scalloped black markings. Xiphorhynchus woodcreepers, such as the ivory-billed woodcreeper (X. flavigaster) of Central America, are among the more prominently streaked woodcreepers. Like others…

Dendrocolaptidae, songbird family, order Passeriformes, consisting of a number of brownish birds of the forest or brushland and found from Mexico through South America. Representative members are the scythebill and the woodcreeper

woodcreeper, any of about 50 species of tropical American birds constituting the subfamily Dendrocolaptinae, family Furnariidae, order Passeriformes. Some authorities classify the birds as a separate family (Dendrocolaptidae). Woodcreepers work their way up the trunks of trees, probing the bark and

woodpecker: …of temperate North America; the great spotted woodpecker (D. major), about 23 cm (9 inches) long and found from the forests and gardens of western temperate Eurasia south to North Africa; and the hairy woodpecker (D. villosus), which is 20–25 cm (8–9.8 inches) long and found in temperate North America.

woodpecker: …species of Dendrocopos include the downy woodpecker (D. pubescens), only about 15 cm (6 inches) long and inhabiting the woodlands and gardens of temperate North America; the great spotted woodpecker (D. major), about 23 cm (9 inches) long and found from the forests and gardens of western temperate Eurasia south…

woodpecker: …to North Africa; and the hairy woodpecker (D. villosus), which is 20–25 cm (8–9.8 inches) long and found in temperate North America.

whistling duck, (genus Dendrocygna), any of eight species of long-legged and long-necked ducks that utter sibilant cries and may make whirring wing sounds in flight; these distinctive ducks are separated from other members of the family Anatidae (order Anseriformes) as a tribe Dendrocygnini.

whistling duck: …of the tribe is the fulvous tree duck (Dendrocygna bicolor), with isolated populations in North and South America, India, and Africa—a most unusual world distribution and, remarkably, without geographic variation. It is mallard-sized, with a rusty brown body, a white rump, and creamy stripes on the flanks.

anseriform: Annotated classification: Subfamily Dendrocygninae (whistling ducks) 9 species in 2 genera widely distributed in the tropics and subtropics. Whistling voice. Relatively long-legged, with upright stance. Enclosed bony eye socket. Strongly patterned adult plumage; downy young with light stripe below eyes and around nape. Mature at one year. Mutual…

Oceanic art and architecture: The southeast: …of monument was created: the dendroglyph, an engraving on a living tree trunk. Carved in the usual geometric style, dendroglyphs featured clan designs or made references to local myths. They were used to mark the graves of notable men or to indicate the perimeters of ceremonial grounds.

phylogenetic tree, a diagram showing the evolutionary interrelations of a group of organisms derived from a common ancestral form. The ancestor is in the tree “trunk”; organisms that have arisen from it are placed at the ends of tree “branches.” The distance of one group from the other groups

hyrax: The tree hyraxes (Dendrohyrax) are arboreal, solitary, and nocturnal. All are primarily vegetarian.

wood warbler: Dendroica is the largest genus of wood warblers; this chiefly North American genus has 27 species, most of which have contrasting plumage, such as the black, white, and yellow of the myrtle warbler (D. coronata). A common but less-striking species is the blackpoll warbler (D.…

wood warbler: …white, and yellow of the myrtle warbler (D. coronata). A common but less-striking species is the blackpoll warbler (D. striata). Some authors merge Dendroica in Vermivora, a less-colourful genus of 11 species, most of them well known in the United States.

conservation: Fire control: …both possible and essential is Kirtland’s warbler (Dendroica kirtlandii; see woodwarbler). This endangered species nests only in the Upper Peninsula of Michigan, an exceptional case of a bird species with a tiny geographic range well outside the tropics. The bird places its nest in grasses and shrubs below living branches…

wood warbler: Best known is the yellow warbler (Dendroica petechia), sometimes miscalled the wild canary, which breeds from Alaska and Newfoundland to the West Indies, Peru, and the Galapagos Islands; it is 13 cm (5 inches) long, and the males have faintly red-streaked underparts. Dendroica is the largest genus of wood…

blackpoll warbler, species of woodwarbler

dendrology, study of the characteristics of trees, shrubs, lianas, and other woody plants. Dendrology is generally considered to be a branch of systematic botany or forestry and is primarily concerned with the taxonomy of woody species. Historically, dendrology also encompassed the natural history

tree poppy: The related island tree poppy (Dendromecon harfordii), endemic to the Channel Islands off the southern California coast, reaches a height of 6 metres (20 feet). Tree poppies are hardy as ornamentals only in areas with mild winters.

tree poppy, (Dendromecon rigida), shrub or small tree of the poppy family (Papaveraceae), native to chaparral areas of southern California and northwestern Mexico. The related island tree poppy (Dendromecon harfordii), endemic to the Channel Islands off the southern California coast, reaches a

nudibranch: …cold northern seas is the bushy-backed sea slug (Dendronotus frondosus), named for its stalked, lacy cerata. Occurring worldwide in warm seas are the blue sea slug (Glaucus marina, or G. atlanticus) and the doridacean nudibranchs such as Doris and Glossodoris. See gastropod.

Araliaceae: …several species, especially that of Dendropanax arboreum and several members of the genus Didymopanax, provides timber.

primate: Miocene: …number of other genera (Limnopithecus, Dendropithecus, Afropithecus, Kamoypithecus, and others) have been added to the family. The location of the actual ancestors of living hominoids remained mysterious until previously known specimens from the Moroto District, in eastern Uganda, were reexamined and fresh material was discovered. In 1997 the description of…

Northwest Territories: Population composition: …territorial population and include the Dene and the Métis. Concentrated in the Mackenzie valley area, the Dene belong to several tribes, all part of the Athabaskan language family. Tribal organization was never strong among the Dene, and small bands led by individuals chosen for their skill in the hunt were…

Slave, group of Athabaskan-speaking Indians of Canada, originally inhabiting the western shores of the Great Slave Lake, the basins of the Mackenzie and Liard rivers, and other neighbouring riverine and forest areas. Their name, Awokanak, or Slave, was given them by the Cree, who plundered and

Deneb, one of the brightest stars, with an apparent magnitude of 1.25. This star, at about 1,500 light-years’ distance, is the most remote (and brightest intrinsically) of the 20 apparently brightest stars. It lies in the northern constellation Cygnus and, with Vega and Altair, forms the prominent

Capricorn: Its stars are faint; Deneb Algedi (Arabic for “kid’s tail”) is the brightest star, with a magnitude of 2.9. Capricornus usually refers to the constellation, and Capricorn usually refers to the astrological sign.

Richard Tauber was an Austrian-born British tenor celebrated for his work in opera and, especially, operetta. Tauber was studying voice at Freiberg, Ger., at the time of his highly successful operatic debut, as Tamino in Wolfgang Amadeus Mozart’s The Magic Flute (Die Zauberflöte) at the Chemnitz

Catherine Deneuve is a French actress noted for her archetypal Gallic beauty as well as for her roles in films by some of the world’s greatest directors. Deneuve was the third of four daughters born to the French actors Maurice Dorléac and Renée Deneuve. She landed a small role in the 1957 film Les

nuclear weapon: China: …Academy, under the direction of Deng Jiaxian, was ordered to shift to thermonuclear work. Facilities were constructed to produce lithium-6 deuteride and other required components. By the end of 1965 the theoretical work for a multistage bomb had been completed, and manufacture of the test device was finished by the…

Deng Xiaoping was the most powerful figure in the People’s Republic of China from the late 1970s until his death in 1997. He abandoned many orthodox communist doctrines and attempted to incorporate elements of the free-enterprise system and other reforms into the Chinese economy. Deng was the son

Deng Yaping is a Chinese table tennis player, who won six world championships and four Olympic championships between 1989 and 1997. She is regarded as one of the greatest players in the history of the sport. Deng began playing table tennis at age five, and four years later she won her provincial

Deng Yingchao was a Chinese politician, a revolutionary hard-liner who became a high-ranking official of the Chinese Communist Party (CCP) after the death of her husband, Premier Zhou Enlai, in 1976. Deng’s involvement in political and social causes began in her youth. She joined the movement to

coin: Russia and the Balkans: …kopecks and their halves (dengi) of Mongolian derivation. Ivan IV (1547–84) standardized the types of the dengi as “Tsar and Grand Prince of All Russia,” showing a uniform design of a mounted lancer. From the 15th to the 17th century unstable social and economic conditions were reflected in clipping…

Japanese performing arts: Formative period: …as court entertainment and called dengaku (“field music”).

coin: Russia and the Balkans: …kopecks and their halves (dengi) of Mongolian derivation. Ivan IV (1547–84) standardized the types of the dengi as “Tsar and Grand Prince of All Russia,” showing a uniform design of a mounted lancer. From the 15th to the 17th century unstable social and economic conditions were reflected in clipping…

dengue, acute infectious mosquito-borne fever that is temporarily incapacitating but rarely fatal. Besides fever, the disease is characterized by an extreme pain in and stiffness of the joints (hence the name “breakbone fever”). Complication of dengue fever can give rise to a more severe form,

dengue, acute infectious mosquito-borne fever that is temporarily incapacitating but rarely fatal. Besides fever, the disease is characterized by an extreme pain in and stiffness of the joints (hence the name “breakbone fever”). Complication of dengue fever can give rise to a more severe form,

dengue: …a more severe form, called dengue hemorrhagic fever (DHF), which is characterized by hemorrhaging blood vessels and thus bleeding from the nose, mouth, and internal tissues. Untreated DHF may result in blood vessel collapse, causing a usually fatal condition known as dengue shock syndrome. Dengue is caused by one of…

dengue: …usually fatal condition known as dengue shock syndrome. Dengue is caused by one of four viral serotypes (closely related viruses), designated DEN-1, DEN-2, DEN-3, and DEN-4. These serotypes are members of the Flavivirus genus, which also contains the viruses that cause yellow fever, and can occur in any country where…

dengue: Diagnosis and treatment: Research on a dengue vaccine began in the 1940s but was challenged in particular by the need to protect against all four dengue serotypes. The first vaccine to be approved against the disease was CYD-TDV (Dengvaxia), which was made available in 2015 for use in individuals who reside…

Saichō was a monk who established the Tendai sect of Buddhism in Japan. A priest at the age of 13, Saichō was sent to China to study in 804 and returned with the highly eclectic Tendai (T’ien-t’ai in Chinese) teachings. Unlike other Buddhist sects then in existence in Japan, the Tendai sect taught

South Bucks: Denham, in the northeastern part of the district, is its administrative centre.

Dixon Denham was an English soldier who became one of the early explorers of western Africa. After serving in the Napoleonic Wars, Denham volunteered in 1821 to join Walter Oudney and Lieutenant Hugh Clapperton on an official expedition across the Sahara to Bornu (now in northeastern Nigeria), in

Sir James Steuart Denham, 4th Baronet was a Scottish economist who was the leading expositor of mercantilist views. Denham was educated at the University of Edinburgh (1724–25). In the course of continental travels following his qualification as a lawyer (1735), he became embroiled in the Jacobite

Sir John Denham was a poet who established as a new English genre the leisurely meditative poem describing a particular landscape. Educated at the University of Oxford, Denham was admitted to the bar, but he was already actively writing. He had translated six books of the Aeneid, parts of which

defense mechanism: Denial is the conscious refusal to perceive that painful facts exist. For example, in denying the reality of a loved one’s terminal diagnosis, an individual can escape intolerable thoughts, feelings, or events. 7. Rationalization is the substitution of a safe and reasonable explanation for the…

denial, in military affairs, a defensive strategy used to make it prohibitively difficult for an opponent to achieve a military objective. A denial strategy can be best defined by distinguishing it from a deterrence strategy. In the latter a protagonist’s threatened reprisal, by changing the

history of logic: Categorical forms: ” Universal negative: “Every β is not an α,” or equivalently “No β is an α.” Particular affirmative: “Some β is an α.” Particular negative: “Some β is not an α.” Indefinite affirmative: “β is an α.” Indefinite negative: “β is not an α.” Singular

Rachel Weisz: … (2015), and the biographical drama Denial (2016). In Disobedience (2017) Weisz played a single woman who rekindles a forbidden romance with her childhood friend (portrayed by Rachel McAdams) when she returns home to mourn the death of her father, a powerful Orthodox rabbi. She then starred alongside Emma Stone in…

denial of service attack (DoS attack), type of cybercrime in which an Internet site is made unavailable, typically by using multiple computers to repeatedly make requests that tie up the site and prevent it from responding to requests from legitimate users. The first documented DoS-style attack

applied logic: Formal fallacies: Among the best known are denying the antecedent (“If A, then B; not-A; therefore, not-B”) and affirming the consequent (“If A, then B; B; therefore, A”). The invalid nature of these fallacies is illustrated in the following examples:

Herman Bang: …and De uden faedreland (1906; Denied a Country). The work he did from 1886 to 1890—including a collection of short stories, Stille existenser (1886; “Quiet Existences”), and the novels Stuk (1887; “Stucco”) and Tine (1889)—is considered to be his best. Bang died while on a lecture tour of the United…

coin: Charlemagne and the Carolingian coinages: …gold by silver, introducing the denier, which was to be the basis of all medieval coinage in the north. His new coin was wider and thinner than previous silver pieces. The normal types were simple—obverse R P (for Rex Pepinus), reverse R F (for Rex Francorum).

textile: Denier system: The denier system is a direct-management type, employed internationally to measure the size of silk and synthetic filaments and yarns, and derived from an earlier system for measuring silk filaments (based on the weight in drams of 1,000 yards). Denier number indicates the…

Anton Ivanovich Denikin was a general who led the anti-Bolshevik (“White”) forces on the southern front during the Russian Civil War (1918–20). A professional in the Imperial Russian Army, Denikin served in the Russo-Japanese War (1904–05) and in World War I (1914–16). After the February Revolution

Deniliquin, chief town of the fertile southern Riverina region, south-central New South Wales, Australia. It lies on the Edward River (a branch of the Murray), 22 miles (35 km) from the Victoria border. It was established in 1845 by entrepreneur Benjamin Boyd as a personal holding and was made a

denim, durable twill-woven fabric with coloured (usually blue) warp and white filling threads; it is also woven in coloured stripes. The name is said to have originated in the French serge de Nîmes. Denim is yarn-dyed and mill-finished and is usually all-cotton, although considerable quantities are

jeans, trousers originally designed in the United States by Levi Strauss in the mid-19th century as durable work clothes, with the seams and other points of stress reinforced with small copper rivets. They were eventually adopted by workingmen throughout the United States and then worldwide. Jeans

Dinis was the sixth king of Portugal (1279–1325), who strengthened the kingdom by improving the economy and reducing the power of the nobility and the church. The son of Afonso III, Dinis was educated at a court subject to both French and Castilian cultural influences and became a competent poet.

Dionysius Exiguus was a celebrated 6th-century canonist who is considered the inventor of the Christian calendar, the use of which spread through the employment of his new Easter tables. The 6th-century historian Cassiodorus calls him a monk, but tradition refers to him as an abbot. He arrived in