bivalve: The shell: The bivalve shell is made of calcium carbonate embedded in an organic matrix secreted by the mantle. The periostracum, the outermost organic layer, is secreted by the inner surface of the outer mantle fold at the mantle margin. It is a substrate upon which…

shell, variously, an artillery projectile, a cartridge case, or a shotgun cartridge. The artillery shell was in use by the 15th century, at first as a simple container for metal or stone shot, which was dispersed by the bursting of the container after leaving the gun. Explosive shells came into use

shell atomic model, simplified description of the structure of atoms that was first proposed by the physicists J. Hans D. Jensen and Maria Goeppert Mayer working independently in 1949. In this model, electrons (negatively charged fundamental particles) in atoms are thought of as occupying diffuse

Huntington Beach, city, Orange county, southwestern California, U.S. Situated south of Los Angeles, it lies along the Pacific Coast Highway. Originally the territory of Gabrielino (Tongva) Indians, the city was formed from parts of Rancho Las Bolsas and Rancho Los Alamitos. It was first called

shell collecting, practice of finding and usually identifying the shells of mollusks, a popular avocation, or hobby, in many parts of the world. These shells, because of their bright colours, rich variety of shapes and designs, and abundance along seashores, have long been used for ornaments,

tiger-flower, (genus Tigridia), genus of about 35 species of flowering plants of the iris family (Iridaceae) native from Mexico to Chile. One tiger-flower, also known as Mexican shell flower (Tigridia pavonia), is cultivated for its attractive flowers and was once prized by the Aztecs for the

bells of Ireland, (Moluccella laevis), annual plant in the mint family (Lamiaceae), grown as a garden curiosity for its green floral spikes. Bells of Ireland is native to western Asia and is commonly used in the floral industry as a fresh or dried flower. Bells of Ireland grows well in cool

mathematics: Apollonius: …one group of curves, the conchoids (from the Greek word for “shell”), are formed by marking off a certain length on a ruler and then pivoting it about a fixed point in such a way that one of the marked points stays on a given line; the other marked point…

cups and balls trick, oldest and most popular of the tricks traditionally performed by a conjurer. To begin the trick, the performer places a bead or ball under one of three inverted cups. The ball is then made to “jump” invisibly from one cup to another or to “multiply.” The basis for the illusion

Sara Paretsky: …the series included Fallout (2017), Shell Game (2018), and Dead Land (2020).

shellflower, any of about 250 species of plants in the genus Alpinia of the ginger family (Zingiberaceae), native to warm climates of Asia and Polynesia. They have gingerlike rhizomes (underground stems) and grow to 6 m (20 feet). Their leaves are long-bladed and leathery. The flower petals form a

animal reproductive system: Tracts: Fertilization takes place above the shell gland, which may be immense or almost undifferentiated. Half of the shell gland secretes a substance high in protein content (albumen), and the other half secretes the shell—delicate in viviparous forms, thick and horny in most oviparous species. Horny shells may have spiral ridges…

branchiopod: The excretory system: …branchiopod excretory organ is the maxillary, or shell, gland, so called because loops of the excretory duct can be seen in the wall of the carapace. In the nauplius larva the excretory function is performed by a gland opening on the antennae, but this degenerates as the animal grows and…

olefin: …formed the basis of the Shell higher olefin process (SHOP). In olefin oligomerization, the compounds are grown by combining lower-molecular-weight monoolefins, particularly ethylene, which is the simplest olefin. Olefin metathesis involves the exchange of chemical substituents with subsequent re-formation of double bonds. LAOs produced via oligomerization and olefin metathesis are…

keep: …or Windsor, were known as shell keeps, while Norman keeps tended to be massive square towers. The most famous of the Norman keeps of England is the White Tower of London of the 11th century, supposedly designed by Gundulf, bishop of Rochester. Other Norman keeps include those at Rochester, Arundel,…

metallurgy: Sand-casting: …variant of sand-casting is the shell-molding process, in which a mixture of sand and a thermosetting resin binder is placed on a heated metal pattern. The resin sets, binding the sand particles together and forming half of a strong mold. Two halves and any desired cores are then assembled to…

shell mound, in anthropology, prehistoric refuse heap, or mound, consisting chiefly of the shells of edible mollusks intermingled with evidence of human occupancy. Midden living, found throughout the world, first developed after the retreat of the glaciers and the disappearance of large Pleistocene

Japanese art: Jōmon period: …Morse used in his book Shell Mounds of Omori (1879) to describe the distinctive decoration on the prehistoric pottery shards he found. Other names, such as “Ainu school pottery” and “shell mound pottery,” were also applied to pottery from this period, but after some decades—although cord marks are not the…

muscle: Mollusks: The columellar (shell) muscles of gastropods pull the foot and other parts of the body into the shell. The adductor muscles of bivalves (Figure 4) shorten to close the shell or relax to allow the shell to spring open, enabling the mollusk to extend its foot…

shell nuclear model, description of nuclei of atoms by analogy with the Bohr atomic model of electron energy levels. It was developed independently in the late 1940s by the American physicist Maria Goeppert Mayer and the German physicist J. Hans D. Jensen, who shared the Nobel Prize for Physics in

construction: Use of reinforced concrete: …Khan in the 221-meter (725-foot) Shell Oil Building (1967) in Houston.

Shell Oil Company (SOC), major U.S. oil company that is the principal American subsidiary of Royal Dutch Shell PLC, a giant oil company headquartered in The Hague,

greenhood: …greenhoods are commonly known as shell orchids. The jug orchid (Pterostylis recurva) is named for its shape. The hooded orchid (P. banksii) is native to New Zealand, and the closely related king greenhood (P. baptistii) is from neighbouring Australia.

budgerigar, popular species of parakeet

combat fatigue, a neurotic disorder caused by the stress involved in war. This anxiety-related disorder is characterized by (1) hypersensitivity to stimuli such as noises, movements, and light accompanied by overactive responses that include involuntary defensive jerking or jumping (startle

Pleione: …to be typical of the shell stars, so called because in their rapid rotation they throw off shells of gas. In 1938 sudden changes in the spectrum of Pleione were attributed to the ejection of a gaseous shell, which by 1952 had apparently dissipated. Pleione is a blue-white star of…

stork: Two open-billed storks, openbills, or shell storks, Anastomus lamelligerus of tropical Africa and A. oscitans of southern Asia, are small storks that eat water snails. When the mandibles of these birds are closed, a wide gap remains except at the tips, probably an adaptation for holding…

shell structure, in building construction, a thin, curved plate structure shaped to transmit applied forces by compressive, tensile, and shear stresses that act in the plane of the surface. They are usually constructed of concrete reinforced with steel mesh (see shotcrete). Shell construction began

cluster: Structure: …stability is generally called its shell structure.

shell atomic model, simplified description of the structure of atoms that was first proposed by the physicists J. Hans D. Jensen and Maria Goeppert Mayer working independently in 1949. In this model, electrons (negatively charged fundamental particles) in atoms are thought of as occupying diffuse

Royal Dutch Shell PLC: ) of The Hague and Shell Transport and Trading Company, PLC, of London. Below those two parent companies were subsidiary companies that operated around the world. The company’s principal American subsidiary was Shell Oil Company (SOC), founded in 1922. SOC is still Royal Dutch Shell’s largest subsidiary.

Al Davis: …time, including the hiring of Art Shell as head coach in 1989, which made Shell the first African American head coach in the modern era of the NFL. Davis was inducted into the Pro Football Hall of Fame in 1992.

insect: Egg: The chorion, or eggshell, is commonly pierced by respiratory openings that lead to an air-filled meshwork inside the shell. For some insects (e.g., cockroaches and mantids) a batch of eggs is cemented together to form an egg packet or ootheca. Insects may pass unfavourable seasons in the egg…

electron shell, regions surrounding the atomic nucleus containing a specific number of electrons. Each allowed electron orbit is assigned a quantum number n that runs from 1 (for the orbit closest to the nucleus) to infinity (for orbits very far from the nucleus). All the orbitals that have the

jiaguwen, pictographic script found on oracle bones, it was widely used in divination in the Shang dynasty (c. 18th–12th century bc). Turtle carapaces and ox scapulae with inscriptions scratched into them were discovered about 1900 in the area of Xiaotun, a village in Henan province. In subsequent

heat exchanger: …of heat exchanger is the shell-and-tube type illustrated in Figure 2. It utilizes a bundle of tubes through which one of the fluids flows. These tubes are enclosed in a shell with provisions for the other fluid to flow through the spaces between the tubes. In most designs of this…

star: Source of stellar energy: Such models are called shell-source models. As a star uses up increasing amounts of its hydrogen supply, its core grows in mass while the outer envelope of the star continues to expand. These shell-source models explain the observed luminosities, masses, and radii of giants and supergiants.

shellac, commercial resin marketed in the form of amber flakes, made from the secretions of the lac insect, a tiny scale insect, Laccifer lacca (see lac). Shellac is a natural thermoplastic; that is, a material that is soft and flows under pressure when heated but becomes rigid at room temperature.

hickory: Major species: ovata), the shellbark hickory (C. laciniosa), and the mockernut hickory (C. tomentosa). The nuts of the bitternut hickory (C. cordiformis) and the water hickory (C. aquatica) are bitter-tasting and inedible, because the skin covering the kernels contains tannin. The nuts of most other species are edible but…

Thurgood Marshall: …“restrictive covenants” in housing (Shelley v. Kraemer [1948]), and “separate but equal” facilities for African American professionals and graduate students in state universities (Sweatt v. Painter and McLaurin v. Oklahoma State Regents [both 1950]).

Carlos Baker: His book Shelley’s Major Poetry: The Fabric of a Vision (1948) dwells on Shelley’s inner self as visible in his poetry and largely ignores the exterior circumstances of the poet’s life. Baker examines Shelley’s work within a literary chronology and traces the poet’s personal changes through his…

Harold Bloom: Bloom’s own early books, Shelley’s Mythmaking (1959), The Visionary Company: A Reading of English Romantic Poetry (1961, rev. and enlarged ed., 1971), and The Ringers in the Tower: Studies in Romantic Tradition (1971), were creative studies of the Romantic poets and their work, then out of fashion. He examined…

Mary Wollstonecraft Shelley was an English Romantic novelist best known as the author of Frankenstein. The only daughter of William Godwin and Mary Wollstonecraft, she met the young poet Percy Bysshe Shelley in 1812 and eloped with him to France in July 1814. The couple were married in 1816, after

Norman Shelley was a British actor whose career in radio lasted more than five decades. Shelley started work as a Shakespearean actor during the 1920s, playing alongside many leading figures in the British theatre; he later appeared in a variety of classical and modern dramas. He exploited his

Percy Bysshe Shelley was an English Romantic poet whose passionate search for personal love and social justice was gradually channeled from overt actions into poems that rank with the greatest in the English language. Shelley was the heir to rich estates acquired by his grandfather, Bysshe

shellfish, any aquatic invertebrate animal having a shell and belonging to the phylum Mollusca, the class Crustacea (phylum Arthropoda), or the phylum Echinodermata. The term is often used for the edible species of the groups, especially those that are fished or raised commercially. Bivalve

shellfish poisoning, illness in humans resulting from the eating of certain mussels and clams. The source of the poison has been traced to the plankton upon which shellfish feed during parts of the year. Symptoms often begin within 10 minutes after eating the shellfish. Initially, there is tingling

shellflower, any of about 250 species of plants in the genus Alpinia of the ginger family (Zingiberaceae), native to warm climates of Asia and Polynesia. They have gingerlike rhizomes (underground stems) and grow to 6 m (20 feet). Their leaves are long-bladed and leathery. The flower petals form a

sedimentary facies: …transported to the depositional site; biogenic, representing accumulations of whole or fragmented shells and other hard parts of organisms; or chemical, representing inorganic precipitation of material from solution. As conditions change with time, so different depositional sites may change their shapes and characteristics. Each facies thus has a three-dimensional configuration…

construction: Constructed shelters were one means by which human beings were able to adapt themselves to a wide variety of climates and become a global species.

Port-Cartier, town, Côte-Nord region, eastern Quebec province, Canada. It lies on the north shore of the St. Lawrence River estuary, at the mouth of the Rochers River. Originating in 1918 as a small sawmilling community known as Shelter Bay, it was transformed into a modern ocean port 26 miles (42

coronavirus: …and numerous businesses closed, and stay-at-home guidelines were implemented, which strongly encouraged people not to leave their place of residence. Vaccines against SARS-CoV-2 were made available by the end of 2020, eventually allowing many businesses and schools to reopen.

windbreak, trees or shrubs planted in a row to slow and redirect the wind. Windbreaks may also include fences, earth berms, walls, and perennial or annual crops and grasses. Such shelters serve primarily to protect soils, crops, livestock, wildlife, people, and structures from wind stress and wind

homelessness: Homelessness in the United States: Sheltered homeless people spend the night in emergency shelters or in transitional, or temporary, housing. Unsheltered homeless people sleep on the streets, in cars, in abandoned buildings, or in other places not intended for human habitation. The report found that nearly two-thirds of the homeless…

The Sheltering Sky, first novel by Paul Bowles, published in 1948. Considered a model of existential fiction, it sold well and was a critical success. The novel was described by the author as “an adventure story in which the adventures take place on two planes simultaneously: in the actual desert,

Bernardo Bertolucci: In 1990 he directed The Sheltering Sky, an adaptation of Paul Bowles’s novel of the same name. Subsequent films included Stealing Beauty (1996), which centres on an American teenager’s visit to Italy, and The Dreamers (2003), an erotic thriller about an American student in Paris during the student protests…

Jean Auel: …Auel completed the next book, The Shelters of Stone (2002), which tells of Ayla, now formally mated with Jondalar, as she fights to adapt to life in his Cro-Magnon tribe, and another 9 years until the final installment, The Land of Painted Caves (2011), ended Auel’s story with a new…

Shetland Sheepdog, small herding dog developed to control the small sheep, poultry, and ponies of Scotland’s Shetland Islands, the northernmost point of the United Kingdom. Shelties, as they are frequently called, resemble a miniature version of the rough-coated Collie, but it is inaccurate to call

Shelton, city, coextensive with the town (township) of Shelton, Fairfield county, southwestern Connecticut, U.S. It lies along the Housatonic River opposite Derby, about 10 miles (16 km) west of New Haven. The area was settled as part of Stratford about 1697, and in 1724 the parish of Ripton was

Shelton v. Tucker, case in which the U.S. Supreme Court on December 12, 1960, ruled (5–4) that an Arkansas statute which required all public school educators to disclose every organization to which they were affiliated over a five-year period was unconstitutional. The court held that the broad

Blake Shelton is an American singer-songwriter and television personality who first garnered attention as a popular country musician and then found mainstream success as a coach on the TV series The Voice (2011– ). Shelton was the son of a used-car dealer and the owner of a beauty salon. He began

Blake Shelton is an American singer-songwriter and television personality who first garnered attention as a popular country musician and then found mainstream success as a coach on the TV series The Voice (2011– ). Shelton was the son of a used-car dealer and the owner of a beauty salon. He began

supernova: Historical supernovae: …1987, by the Canadian astronomer Ian K. Shelton while working at the Las Campanas Observatory in Chile. Designated SN 1987A, this formerly extremely faint object attained a magnitude of 4.5 within just a few hours, thus becoming visible to the unaided eye. The newly appearing supernova was located in the…

Thomas Shelton was the first English translator of Don Quixote. His work (1612 and 1620) was based not on Cervantes’s originals (1605 and 1615) but on the Velpius edition first published in Brussels in

Noah: …persons of Noah’s three sons, Shem, Ham, and Japheth, ancestors for three of the races of mankind and to account in some degree for their historic relations; and third, by its censure of Canaan, it offers a veiled justification for the later Israelite conquest and subjugation of the Canaanites. Noah’s…

Shema, (Hebrew: “Hear”), the Jewish confession of faith made up of three scriptural texts (Deuteronomy 6:4–9, 11:13–21; Numbers 15:37–41), which, together with appropriate prayers, forms an integral part of the evening and morning services. The name derives from the initial word of the scriptural

Şamaxı, city, east-central Azerbaijan. It is located 76 miles (122 km) west of Baku and is one of the oldest cities in the republic, dating from the 6th century ad, but the modern city was not incorporated until 1824. From the 9th to the 16th century, it was the residence of the Shirvan shahs.

rug and carpet: The Caucasus: …Shirvan, including villages around Baku, Shemakha, and areas just north of the Iranian border. These areas were known for a relatively short-piled weave of medium fineness, woven with the symmetrical knot, as are all Caucasian rugs, usually on a wool foundation, with occasional use of cotton.

Shemanker River, tributary of the Benue River, rising in the Jos Plateau of east-central Nigeria. It flows southward for 95 miles (150 km) to meet the Benue River at Ibi. Its seasonally flooded plains (fadamas) support large-scale rice production. The Shemanker rises suddenly after rains on the

Shemanker River, tributary of the Benue River, rising in the Jos Plateau of east-central Nigeria. It flows southward for 95 miles (150 km) to meet the Benue River at Ibi. Its seasonally flooded plains (fadamas) support large-scale rice production. The Shemanker rises suddenly after rains on the

Shemini Atzeret, (Hebrew: “Eighth Day of the Solemn Assembly”), a Jewish religious festival on the eighth day of Sukkoth (Feast of Booths), considered by some to be an independent celebration immediately following Sukkoth. In Old Testament times a distinction was made regarding sacrifices: whereas

Sefer ha-temuna: …notion of cosmic cycles (shemiṭṭot), each of which provides an interpretation of the Torah according to a corresponding divine attribute. Its primary treatment is of the first three shemiṭṭot, governed respectively by “grace,” “judgment,” and “mercy.” Each eon, consequently, has its own Torah. Mankind, currently living under “judgment,” reads…

Judaism: The traditional pattern of synagogue practices: …public worship; the prayer (tefilla) in the strict sense of petition; confession and supplication (taḥanun) on weekdays; the reading of Scripture; and concluding acts of worship. This general structure of the morning service varies somewhat, with additions and subtractions for the afternoon and evening services and for Sabbath, holy…

Exodus, the liberation of the people of Israel from slavery in Egypt in the 13th century bce, under the leadership of Moses; also, the Old Testament book of the same name. The English name of the book derives from the Septuagint (Greek) use of “exodus” to designate the deliverance of the Israelites

Russia: The 20th century: Ernst Neizvestny, Ilya Kabakov, Mikhail Shemyakin, and Erik Bulatov. They employed techniques as varied as primitivism, hyperrealism, grotesque, and abstraction, but they shared a common distaste for the canons of Socialist Realism. Bland, monumental housing projects dominated the architectural production of the postwar period; later in the century such…

shen, in indigenous Chinese religion, a beneficent spirit of the dead; the term is also applied to deified mortals and gods. The shen are associated with the yang (bright, active) aspect of the cosmos and with the higher, spiritual component of the human soul. After a person’s death, the soul

Shenyang, capital of Liaoning sheng (province), China, and the largest city in the Northeast (formerly Manchuria). It is one of China’s greatest industrial centres. Shenyang is situated in the southern portion of the vast Northeast (Manchurian) Plain just north of the Hun River, a major tributary

Shen Zhou was a Chinese artist who was a leading member of a group of scholar-artists later known as the Wu school (after Wu district). Shen was born to an honoured and secure family and enjoyed a long life involved in the learned arts of poetry, painting, and calligraphy. His many paintings reveal

Shen Congwen was an author of fiction and prose who is commonly considered the greatest lyric novelist in modern China. Shen was a member of the Miao ethnic minority. At age 16 he joined a regiment in Yuanling, where he spent the next few years adding to his scanty education and observing the

Mao Dun was a Chinese literary critic and author, generally considered republican China’s greatest realist novelist. Forced to interrupt his schooling in 1916 because he ran out of money, Shen Yanbing became a proofreader at the Commercial Press in Shanghai, the most important publishing house of

Xia Yan was a Chinese writer, journalist, and playwright known for his leftist plays and films. Xia was sent to study in Japan in 1920, and, after his forced return to China in 1927, he joined the Chinese Communist Party. In 1929 he founded the Shanghai Art Theatre, was the first to call for a

Shen Kuo was a Chinese astronomer, mathematician, and high official whose famous work Mengxi bitan (“Brush Talks from Dream Brook” [Dream Brook was the name of his estate in Jingkou]) contains the first reference to the magnetic compass, the first description of movable type, and a fairly accurate

Shen Kuo was a Chinese astronomer, mathematician, and high official whose famous work Mengxi bitan (“Brush Talks from Dream Brook” [Dream Brook was the name of his estate in Jingkou]) contains the first reference to the magnetic compass, the first description of movable type, and a fairly accurate

Shen Kuo was a Chinese astronomer, mathematician, and high official whose famous work Mengxi bitan (“Brush Talks from Dream Brook” [Dream Brook was the name of his estate in Jingkou]) contains the first reference to the magnetic compass, the first description of movable type, and a fairly accurate

Shennong, in Chinese mythology, second of the mythical emperors, said to have been born in the 28th century bce with the head of a bull and the body of a man. By inventing the cart and plow, by taming the ox and yoking the horse, and by teaching his people to clear the land with fire, Shennong

Shen Congwen was an author of fiction and prose who is commonly considered the greatest lyric novelist in modern China. Shen was a member of the Miao ethnic minority. At age 16 he joined a regiment in Yuanling, where he spent the next few years adding to his scanty education and observing the

Shenzong was the temple name (miaohao) of the sixth emperor (reigned 1067–85) of the Song dynasty (960–1279) of China. During his reign some of the greatest intellectual and cultural figures of the era flourished, among them Ouyang Xiu and Su Dongpo. Under the Shenzong emperor, the radical reformer

Xia Yan was a Chinese writer, journalist, and playwright known for his leftist plays and films. Xia was sent to study in Japan in 1920, and, after his forced return to China in 1927, he joined the Chinese Communist Party. In 1929 he founded the Shanghai Art Theatre, was the first to call for a

Olympic Games: Vancouver, British Columbia, Canada, 2010: China’s Shen Xue and Zhao Hongbo took first place in pairs to give the country its first gold in figure skating. Canadians Tessa Virtue and Scott Moir surprisingly triumphed in the ice dancing event, becoming not only the first non-Europeans to win the Olympic ice dancing…

Mao Dun was a Chinese literary critic and author, generally considered republican China’s greatest realist novelist. Forced to interrupt his schooling in 1916 because he ran out of money, Shen Yanbing became a proofreader at the Commercial Press in Shanghai, the most important publishing house of

Chinese literature: Prose: …romances were Han Yu’s pupil Shen Yazhi and Bai Xingjian, younger brother of the poet Bai Juyi. These prose romances, generally short, were written in the classical prose style for the amusement of the literati and did not reach the masses until some of the popular ones were adapted by…

Nanjing: The early empires: …and the invention (reportedly by Shen Yue, a 6th-century courtier) of the system of determining the four tones of the Chinese language. In philosophy, the so-called qingtan (“pure discourse”) movement, spiritually akin to a form of Daoism, found many adherents who held themselves aloof from politics. Hundreds of Buddhist temples…

Shen Congwen was an author of fiction and prose who is commonly considered the greatest lyric novelist in modern China. Shen was a member of the Miao ethnic minority. At age 16 he joined a regiment in Yuanling, where he spent the next few years adding to his scanty education and observing the

Shen Zhou was a Chinese artist who was a leading member of a group of scholar-artists later known as the Wu school (after Wu district). Shen was born to an honoured and secure family and enjoyed a long life involved in the learned arts of poetry, painting, and calligraphy. His many paintings reveal

Shenzhen, city, south-central Guangdong sheng (province), southeastern China. It lies along the coast of the South China Sea and immediately north of Hong Kong. In 1979 Shenzhen was a small border city of some 30,000 inhabitants that served as a customs stop into mainland China from Hong Kong. That

Shaanxi, sheng (province) of north-central China. It is bordered by the Inner Mongolia Autonomous Region to the north, Shanxi province to the east, Henan and Hubei provinces to the southeast, Chongqing municipality and Sichuan province to the south, Gansu province to the west, and the Hui

Shenyang, capital of Liaoning sheng (province), China, and the largest city in the Northeast (formerly Manchuria). It is one of China’s greatest industrial centres. Shenyang is situated in the southern portion of the vast Northeast (Manchurian) Plain just north of the Hun River, a major tributary

William Mitchell: …loss of the navy dirigible Shenandoah in a storm inspired him to publicly accuse the War and Navy departments of “incompetency, criminal negligence, and almost treasonable administration of the national defense.” He was, as he expected, immediately court-martialed, and, after he made the trial a platform for his views, he…

Bronson Howard: …a satire on business, and Shenandoah (1889), which established Charles Frohman as a producer and made a fortune for both producer and author, were also great successes. Howard’s other plays include The Banker’s Daughter (1878), first produced in 1873 as Lillian’s Last Love; Wives (1879); Young Mrs. Winthrop (1882); and…

Shenandoah National Park, preserve of 311 square miles (805 square km) in the Blue Ridge section of the Appalachian Mountains, in northern Virginia, U.S. The park was authorized in 1926 and established in 1935. The park is noted for its scenery, which affords some of the most spectacular panoramic