principal+activity

SUBJECT AREA: Horology

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Burgi entered the service of Duke William IV of Hesse in 1579 as Court Clockmaker, although he also assisted William with his astronomical observations. In 1584 he invented the cross-beat escapement which increased the accuracy of spring-driven clocks by two orders of magnitude. During the last years of the century he also worked on the development of geometrical and astronomical instruments for the Royal Observatory at Kassel.

On the death of Duke Wilhelm in 1603, and with news of his skills having reached the Holy Roman Emperor Rudolph II, in 1604 he went to Prague to become Imperial Watchmaker and to assist in the creation of a centre of scientific activity, subsequently becoming Assistant to the German astronomer, Johannes Kepler. No doubt this association led to an interest in mathematics and he made significant contributions to the concept of decimal fractions and the use of exponential notation, i.e. the use of a raised number to indicate powers of another number. It is likely that he was developing the idea of logarithms at the same time (or possibly even before) Napier, for in 1620 he made his greatest contribution to mathematics, science and, eventually, engineering, namely the publication of tables of anti-logarithms.

At Prague he continued the series of accurate clocks and instruments for astronomical measurements that he had begun to produce at Kassel. At that period clocks were very poor timekeepers since the controller, the foliot or balance, had no natural period of oscillation and was consequently dependent on the driving force. Although the force of the driving weight was constant, irregularities occurred during the transmission of the power through the train as a result of the poor shape and quality of the gearing. Burgi attempted to overcome this directly by superb craftsmanship and indirectly by using a remontoire. This device was wound at regular intervals by the main driving force and fed the power directly to the escape wheel, which impulsed the foliot. He also introduced the crossbeat escapement (a variation on the verge), which consisted of two coupled foliots that swung in opposition to each other. According to contemporary evidence his clocks produced a remarkable improvement in timekeeping, being accurate to within a minute a day. This improvement was probably a result of the use of a remontoire and the high quality of the workmanship rather than a result of the cross-beat escapement, which did not have a natural period of oscillation.

Burgi or Prague clocks, as they were known, were produced by very few other makers and were supplanted shortly afterwards by the intro-duction of the pendulum clock. Burgi also produced superb clockwork-driven celestial globes.

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See also: Briggs, Henry

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SUBJECT AREA: Medical technology

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The youngest of a family of eight of moderate means, Dakin received his early education in Leeds experiencing strict scientific training as a public analyst. He regarded this as having been of the utmost value to him in his lifelong commitment to the emerging discipline of biochemistry.

He was one of the earliest to specialize in the significance of optical activity in organic chemistry, and obtained his BSc from Manchester in 1901. Following this, he worked at the Lister (Jenner) Institute of Preventive Medicine and at Heidelberg. He then received an invitation to join Christian Herter in a private research laboratory that had been established in New York. There, for the rest of his life, he continued his studies into a wide variety of biochemical topics. Christian Herter died in 1910, and six years later his widow and Dakin were married.

Unable to serve in the First World War, he made a major contribution, in collaboration with Carrel, with the technique for the antiseptic irrigation of wounds with a buffered hypochlorite solution (Eusol), a therapy which in the 1990s is still an accepted approach to the treatment of infected wounds. The original trials were carried out on the liner Aquitania, then serving as a hospital ship in the Dardanelles.

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SUBJECT AREA: Medical technology

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Domagk's studies in medicine were interrupted by the outbreak of the First World War and his service in the Army, delaying his qualification at Kiel until 1921. For a short while he worked at the University of Greifswald, but in 1925 he was appointed Reader in Pathology at the University of Munster, where he remained as Extraordinary Professor of General Pathology and Pathological Anatomy (1928) and Professor (1958).

In 1924 he published a paper on the role of the reticulo-endothelial system against infection. This led to his appointment as Director of Research by IG Farbenindustrie in their laboratory for experimental pathology and bacteriology. The planned programme of research into potential antibacterial chemotherapeutic drugs led, via the discovery of the dye Prontosil rubrum by his colleagues, to his reporting in 1936 the clinical antistreptococcal effects of the sulphonamide drugs. These results were confirmed in other countries, but owing to problems with the Nazi authorities he was unable to receive until 1947 the Nobel Prize that he was awarded in 1939.

Domagk turned his interest to the chemotherapy of tuberculosis, and in 1946 he was able to report the therapeutic activity of the thiosemicarbazones, which, although too toxic for general use, in their turn led to the discovery of the potent and effective isoniazid. In his later years he moved into the field of cancer chemotherapy, but interestingly he wrote, "One should not have too great expectations of the future of cytostatic agents." His only daughter was one of the first patients to have a severe streptococcal infection successfully treated with Prontosil rubrum.

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SUBJECT AREA: Ports and shipping, Steam and internal combustion engines

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John was the third son of David Elder. The father came from a family of millwrights and moved to Glasgow where he worked for the well-known shipbuilding firm of Napier's and was involved with improving marine engines. John was educated at Glasgow High School and then for a while at the Department of Civil Engineering at Glasgow University, where he showed great aptitude for mathematics and drawing. He spent five years as an apprentice under Robert Napier followed by two short periods of activity as a pattern-maker first and then a draughtsman in England. He returned to Scotland in 1849 to become Chief Draughtsman to Napier, but in 1852 he left to become a partner with the Glasgow general engineering company of Randolph Elliott \& Co. Shortly after his induction (at the age of 28), the engineering firm was renamed Randolph Elder \& Co.; in 1868, when the partnership expired, it became known as John Elder \& Co. From the outset Elder, with his partner, Charles Randolph, approached mechanical (especially heat) engineering in a rigorous manner. Their knowledge and understanding of entropy ensured that engine design was not a hit-and-miss affair, but one governed by recognition of the importance of the new kinetic theory of heat and with it a proper understanding of thermodynamic principles, and by systematic development. In this Elder was joined by W.J.M. Rankine, Professor of Civil Engineering and Mechanics at Glasgow University, who helped him develop the compound marine engine. Elder and Randolph built up a series of patents, which guaranteed their company's commercial success and enabled them for a while to be the sole suppliers of compound steam reciprocating machinery. Their first such engine at sea was fitted in 1854 on the SS Brandon for the Limerick Steamship Company; the ship showed an improved performance by using a third less coal, which he was able to reduce still further on later designs.

Elder developed steam jacketing and recognized that, with higher pressures, triple-expansion types would be even more economical. In 1862 he patented a design of quadruple-expansion engine with reheat between cylinders and advocated the importance of balancing reciprocating parts. The effect of his improvements was to greatly reduce fuel consumption so that long sea voyages became an economic reality.

His yard soon reached dimensions then unequalled on the Clyde where he employed over 4,000 workers; Elder also was always interested in the social welfare of his labour force. In 1860 the engine shops were moved to the Govan Old Shipyard, and again in 1864 to the Fairfield Shipyard, about 1 mile (1.6 km) west on the south bank of the Clyde. At Fairfield, shipbuilding was commenced, and with the patents for compounding secure, much business was placed for many years by shipowners serving long-distance trades such as South America; the Pacific Steam Navigation Company took up his ideas for their ships. In later years the yard became known as the Fairfield Shipbuilding and Engineering Company Ltd, but it remains today as one of Britain's most efficient shipyards and is known now as Kvaerner Govan Ltd.

In 1869, at the age of only 45, John Elder was unanimously elected President of the Institution of Engineers and Shipbuilders in Scotland; however, before taking office and giving his eagerly awaited presidential address, he died in London from liver disease. A large multitude attended his funeral and all the engineering shops were silent as his body, which had been brought back from London to Glasgow, was carried to its resting place. In 1857 Elder had married Isabella Ure, and on his death he left her a considerable fortune, which she used generously for Govan, for Glasgow and especially the University. In 1883 she endowed the world's first Chair of Naval Architecture at the University of Glasgow, an act which was reciprocated in 1901 when the University awarded her an LLD on the occasion of its 450th anniversary.

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RLH / FMW

SUBJECT AREA: Architecture and building

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The name of Le Corbusier is synonymous with the International style of modern architecture and city planning, one utilizing functionalist designs carried out in twentieth-century materials with modern methods of construction. Charles-Edouard Jeanneret, born in the watch-making town of La Chaux-de-Fonds in the Jura mountain region, was the son of a watch engraver and dial painter. In the years before 1918 he travelled widely, studying building in many countries. He learned about the use of reinforced concrete in the studio of Auguste Perret and about industrial construction under Peter Behrens. In 1917 he went to live in Paris and spent the rest of his life in France; in 1920 he adopted the name of Le Corbusier, one derived from that of his ancestors (Le Corbesier), and ten years later became a French citizen.

Le Corbusier's long working life spanned a career divided into three distinct parts. Between 1905 and 1916 he designed a number of simple and increasingly modern houses; the years 1921 to 1940 were ones of research and debate; and the twenty years from 1945 saw the blossoming of his genius. After 1917 Le Corbusier gained a reputation in Paris as an architect of advanced originality. He was particularly interested in low-cost housing and in improving accommodation for the poor. In 1923 he published Vers une architecture, in which he planned estates of mass-produced houses where all extraneous and unnecessary features were stripped away and the houses had flat roofs and plain walls: his concept of "a machine for living in". These white boxes were lifted up on stilts, his pilotis, and double-height living space was provided internally, enclosed by large areas of factory glazing. In 1922 Le Corbusier exhibited a city plan, La Ville contemporaine, in which tall blocks made from steel and concrete were set amongst large areas of parkland, replacing the older concept of city slums with the light and air of modern living. In 1925 he published Urbanisme, further developing his socialist ideals. These constituted a major reform of the industrial-city pattern, but the ideas were not taken up at that time. The Depression years of the 1930s severely curtailed architectural activity in France. Le Corbusier designed houses for the wealthy there, but most of his work prior to 1945 was overseas: his Centrosoyus Administration Building in Moscow (1929–36) and the Ministry of Education Building in Rio de Janeiro (1943) are examples. Immediately after the end of the Second World War Le Corbusier won international fame for his Unité d'habitation theme, the first example of which was built in the boulevard Michelet in Marseille in 1947–52. His answer to the problem of accommodating large numbers of people in a small space at low cost was to construct an immense all-purpose block of pre-cast concrete slabs carried on a row of massive central supports. The Marseille Unité contains 350 apartments in eight double storeys, with a storey for shops half-way up and communal facilities on the roof. In 1950 he published Le Modular, which described a system of measurement based upon the human male figure. From this was derived a relationship of human and mathematical proportions; this concept, together with the extensive use of various forms of concrete, was fundamental to Le Corbusier's later work. In the world-famous and highly personal Pilgrimage Church of Notre Dame du Haut at Ronchamp (1950–5), Le Corbusier's work was in Expressionist form, a plastic design in massive rough-cast concrete, its interior brilliantly designed and lit. His other equally famous, though less popular, ecclesiastical commission showed a contrasting theme, of "brutalist" concrete construction with uncompromisingly stark, rectangular forms. This is the Dominican Convent of Sainte Marie de la Tourette at Eveux-sur-l'Arbresle near Lyon, begun in 1956. The interior, in particular, is carefully worked out, and the lighting, from both natural and artificial sources, is indirect, angled in many directions to illuminate vistas and planes. All surfaces are carefully sloped, the angles meticulously calculated to give optimum visual effect. The crypt, below the raised choir, is painted in bright colours and lit from ceiling oculi.

One of Le Corbusier's late works, the Convent is a tour de force.

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SUBJECT AREA: Metallurgy

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He was the son of John Johnson, then sole Commercial Assayer in London, from whom he inherited his aptitude for chemistry and metallurgy. At the age of 14 he was apprenticed to his father by the Worshipful Company of Goldsmiths. Ore samples then being analysed in Johnson's office introduced him to the new metal platinum, and resulted in a paper to Philosophical Magazine in 1812. Johnson established himself as a "practical mineralogist" in Maiden Lane, London, in 1818 and in Hatton Garden after 1822. He was greatly assisted by a fellow metallurgist, Thomas Cock (1787–1842), who developed the platinum fabrication and pigment sides of die business. In 1827 Johnson was consulted by the Russian government about the exploitation of the rich platinum deposits that had been discovered in the Urals in 1819. Between 1829 and 1832 Johnson became the first in England to manufacture nickel, extracted from nickel-bearing material imported from Germany at his plant at Bow Common on the Regent's Canal. In 1832 he began to réfine gold imported from the Imperial Brazilian Association by a process which separated without loss the metals silver, platinum, palladium, rhodium and iridium. This profitable activity continued until the Brazilian company was wound up in 1852. Since 1824, Johnson had been named "assay master" by a number of mining companies. From 1843 until the mid-1850s he had a considerable mining interest in the West Country. Meanwhile, the Hatton Garden establishment continued to prosper. In 1839 he was joined by George Matthey, who particularly fostered the Russian platinum business, and in 1851 he was taken unto partnership and the firm became the celebrated Johnson Matthey. In the following year the firm was officially recognized as one of the four Assayers to the Bank of England appointed to handle the flood of gold dust then arriving in England from the Australian gold fields. Soon after, however, ill health compelled him to retire to his Devon country house.

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SUBJECT AREA: Aerospace, Architecture and building, Horology, Weapons and armour

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Leonardo was the illegitimate son of a Florentine lawyer. His first sixteen years were spent with the lawyer's family in the rural surroundings of Vinci, which aroused in him a lifelong love of nature and an insatiable curiosity in it. He received little formal education but extended his knowledge through private reading. That gave him only a smattering of Latin, a deficiency that was to be a hindrance throughout his active life. At sixteen he was apprenticed in the studio of Andrea del Verrochio in Florence, where he received a training not only in art but in a wide variety of crafts and technical arts.

In 1482 Leonardo went to Milan, where he sought and obtained employment with Ludovico Sforza, later Duke of Milan, partly to sculpt a massive equestrian statue of Ludovico but the work never progressed beyond the full-scale model stage. He did, however, complete the painting which became known as the Virgin of the Rocks and in 1497 his greatest artistic achievement, The Last Supper, commissioned jointly by Ludovico and the friars of Santa Maria della Grazie and painted on the wall of the monastery's refectory. Leonardo was responsible for the court pageants and also devised a system of irrigation to supply water to the plains of Lombardy. In 1499 the French army entered Milan and deposed Leonardo's employer. Leonardo departed and, after a brief visit to Mantua, returned to Florence, where for a time he was employed as architect and engineer to Cesare Borgia, Duke of Romagna. Around 1504 he completed another celebrated work, the Mona Lisa.

In 1506 Leonardo began his second sojourn in Milan, this time in the service of King Louis XII of France, who appointed him "painter and engineer". In 1513 Leonardo left for Rome in the company of his pupil Francesco Melzi, but his time there was unproductive and he found himself out of touch with the younger artists active there, Michelangelo above all. In 1516 he accepted with relief an invitation from King François I of France to reside at the small château of St Cloux in the royal domain of Amboise. With the pension granted by François, Leonardo lived out his remaining years in tranquility at St Cloux.

Leonardo's career can hardly be regarded as a success or worthy of such a towering genius. For centuries he was known only for the handful of artistic works that he managed to complete and have survived more or less intact. His main activity remained hidden until the nineteenth and twentieth centuries, during which the contents of his notebooks were gradually revealed. It became evident that Leonardo was one of the greatest scientific investigators and inventors in the history of civilization. Throughout his working life he extended a searching curiosity over an extraordinarily wide range of subjects. The notes show careful investigation of questions of mechanical and civil engineering, such as power transmission by means of pulleys and also a form of chain belting. The notebooks record many devices, such as machines for grinding and polishing lenses, a lathe operated by treadle-crank, a rolling mill with conical rollers and a spinning machine with pinion and yard divider. Leonardo made an exhaustive study of the flight of birds, with a view to designing a flying machine, which obsessed him for many years.

Leonardo recorded his observations and conclusions, together with many ingenious inventions, on thousands of pages of manuscript notes, sketches and drawings. There are occasional indications that he had in mind the publication of portions of the notes in a coherent form, but he never diverted his energy into putting them in order; instead, he went on making notes. As a result, Leonardo's impact on the development of science and technology was virtually nil. Even if his notebooks had been copied and circulated, there were daunting impediments to their understanding. Leonardo was left-handed and wrote in mirror-writing: that is, in reverse from right to left. He also used his own abbreviations and no punctuation.

At his death Leonardo bequeathed his entire output of notes to his friend and companion Francesco Melzi, who kept them safe until his own death in 1570. Melzi left the collection in turn to his son Orazio, whose lack of interest in the arts and sciences resulted in a sad period of dispersal which endangered their survival, but in 1636 the bulk of them, in thirteen volumes, were assembled and donated to the Ambrosian Library in Milan. These include a large volume of notes and drawings compiled from the various portions of the notebooks and is now known as the Codex Atlanticus. There they stayed, forgotten and ignored, until 1796, when Napoleon's marauding army overran Italy and art and literary works, including the thirteen volumes of Leonardo's notebooks, were pillaged and taken to Paris. After the war in 1815, the French government agreed to return them but only the Codex Atlanticus found its way back to Milan; the rest remained in Paris. The appendix to one notebook, dealing with the flight of birds, was later regarded as of sufficient importance to stand on its own. Four small collections reached Britain at various times during the seventeenth and eighteenth centuries; of these, the volume in the Royal Collection at Windsor Castle is notable for its magnificent series of anatomical drawings. Other collections include the Codex Leicester and Codex Arundel in the British Museum in London, and the Madrid Codices in Spain.

Towards the end of the nineteenth century, Leonardo's true stature as scientist, engineer and inventor began to emerge, particularly with the publication of transcriptions and translations of his notebooks. The volumes in Paris appeared in 1881–97 and the Codex Atlanticus was published in Milan between 1894 and 1904.

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LRD / IMcN

SUBJECT AREA: Chemical technology, Metallurgy

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MacArthur served his apprenticeship in the laboratory of Tennant's Tharsis Sulphur and Copper Company in Glasgow. In 1886 he was appointed Technical Manager of the Tennant-run Cassel Gold Extracting Company. By 1888 he was advocating a treatment scheme in which gold was dissolved from crushed rock by a dilute solution of alkali cyanide and then precipitated onto finely divided zinc. During the next few years, with several assistants, he was extremely active in promoting the new gold-extraction technique in various parts of the world. In 1894 significant sums in royalty payments were received, but by 1897 the patents had been successfully contested; henceforth the Cassel Company concentrated on the production and marketing of the essential sodium cyanide reagent.

MacArthur was Managing Director of the Cassel Company from 1892 to 1897; he resigned as a director in December 1905. In 1907 he created the Antimony Recovery Syndicate, and in 1911 he set up a small plant at Runcorn, Cheshire, to produce radium salts. In 1915 this radium-extraction activity was transferred to Balloch, south of Loch Lomond, where it was used until some years after his death.

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SUBJECT AREA: Electronics and information technology

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For many years Wirth was Professor of Computing Science at Zurich Federal Polytechnic School. In 1969, seeking a high-level computer language suitable for teaching programming as a systematic activity, he invented PASCAL, which is now widely used with personal computers (PCs). Unlike BASIC, which is checked and run a line at a time, PASCAL programs are compiled (i.e. they are fully checked for consistency) before they are actually run.

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See also: Kemeny, John G.; Kurtz, Thomas E.

μυστήριον, ου, τό ‘secret, secret rite, secret teaching, mystery’ a relig. t.t. (predom. pl.) applied in the Gr-Rom. world mostly to the mysteries w. their secret teachings, relig. and political in nature, concealed within many strange customs and ceremonies. The principal rites remain unknown because of a reluctance in antiquity to divulge them (Trag.+; Hdt. 2, 51, 2; Diod S 1, 29, 3; 3, 63, 2; Socrat., Ep. 27, 3; Cornutus 28 p. 56, 22; 57, 4; Alciphron 3, 26, 1; OGI 331, 54; 528, 13; 721, 2, SIG s. index; Sb 7567, 9 [III A.D.]; PGM 1, 131; 4, 719ff; 2477 τὰ ἱερὰ μ. ἀνθρώποις εἰς γνῶσιν; 5, 110; 12, 331; 13, 128 τὸ μυστήριον τοῦ θεοῦ. Only the perfected gnostic is τῶν μυστηρίων ἀκροατής Hippol., Ref. 5, 8, 29.—OKern, D. griech. Mysterien d. klass. Zeit 1927; WOtto, D. Sinn der eleusin. Myst. ’40; MNilsson, The Dionysiac Mysteries of the Hell. and Rom. Age, ’57; Kl. Pauly III 1533–42; WBurkert, Antike Mysterien ’90). Also LXX and other versions of the OT use the word, as well as En (of the heavenly secret) and numerous pseudepigr., Philo, Joseph. (C. Ap. 2, 189, 266), apolog. (exc. Ar.); it is a loanw. in rabb. Our lit. uses μ. in ref. to the transcendent activity of God and its impact on God’s people.

① the unmanifested or private counsel of God, (God’s) secret, the secret thoughts, plans, and dispensations of God (SJCh 78, 9; τὸ μ. τῆς μοναρχίας τῆς κατὰ τὸν θεόν Theoph. Ant. 2, 28 [p. 166, 17]) which are hidden fr. human reason, as well as fr. all other comprehension below the divine level, and await either fulfillment or revelation to those for whom they are intended (the divine Logos as διδάσκαλος θείων μυστηρίων Orig., C. Cels. 3, 62, 9: the constellations as δεῖγμα καὶ τύπον … μεγάλου μυστηρίου Hippol. Ant. 2, 15 [p. 138, 7]; Abraham is τῶν θείων … μέτοχος μυστηρίων Did., Gen. 213, 20).

ⓐ In the gospels μ. is found only in one context, where Jesus says to the disciples who have asked for an explanation of the parable(s) ὑμῖν τὸ μυστήριον δέδοται τῆς βασιλείας τ. θεοῦ Mk 4:11; the synopt. parallels have the pl. Mt 13:11 (LCerfaux, NTS 2, ’55/56, 238–49); Lk 8:10.—WWrede, D. Messiasgeh. in den Evv. 1901; HEbeling, D. Messiasgeh. u. d. Botschaft des Mc-Evangelisten ’39; NJohansson, SvTK 16, ’40, 3–38; OPiper, Interpretation 1, ’47, 183–200; RArida, St Vladimar Theol. Qtly 38, ’94, 211–34 (patristic exegesis Mk 4:10–12 par.).

ⓑ The Pauline lit. has μ. in 21 places. A secret or mystery, too profound for human ingenuity, is God’s reason for the partial hardening of Israel’s heart Ro 11:25 or the transformation of the surviving Christians at the Parousia 1 Cor 15:51. Even Christ, who was understood by so few, is God’s secret or mystery Col 2:2, hidden ages ago 1:26 (cp. Herm. Wr. 1, 16 τοῦτό ἐστι τὸ κεκρυμμένον μυστήριον μέχρι τῆσδε τῆς ἡμέρας), but now gloriously revealed among the gentiles vs. 27, to whom the secret of Christ, i.e. his relevance for them, is proclaimed, 4:3 (CMitton, ET 60, ’48/49, 320f). Cp. Ro 16:25; 1 Cor 2:1 (cp. Just., D. 91, 1; 131, 2 al. μ. τοῦ σταυροῦ; 74, 3 τὸ σωτήριον τοῦτο μ., τοῦτʼ ἔστι τὸ πάθος τοῦ χριστοῦ). The pl. is used to denote Christian preaching by the apostles and teachers in the expr. οἰκονόμοι μυστηρίων θεοῦ 1 Cor 4:1 (Iambl., Vi. Pyth. 23, 104 calls the teachings of Pyth. θεῖα μυστήρια). Not all Christians are capable of understanding all the mysteries. The one who speaks in tongues πνεύματι λαλεῖ μυστήρια utters secret truths in the Spirit which the person alone shares w. God, and which others, even Christians, do not understand 1 Cor 14:2. Therefore the possession of all mysteries is a great joy 13:2 (Just., D. 44, 2). And the spirit-filled apostle can say of the highest stage of Christian knowledge, revealed only to the τέλειοι: λαλοῦμεν θεοῦ σοφίαν ἐν μυστηρίῳ we impart the wisdom of God in the form of a mystery (ἐν μυστηρίῳ=in a mysterious manner [Laud. Therap. 11] or =secretly, so that no unauthorized person would learn of it [cp. Cyr. of Scyth. p. 90, 14 ἐν μυστηρίῳ λέγει]) 2:7 (AKlöpper, ZWT 47, 1905, 525–45).—Eph, for which (as well as for Col) μ. is a predominant concept, sees the μ. τοῦ θελήματος αὐτοῦ (sc. θεοῦ) 1:9 or μ. τ. Χριστοῦ 3:4 or μ. τ. εὐαγγελίου 6:19 in acceptance of the gentiles as Christians 3:3ff, 9ff. A unique great mystery is revealed 5:32, where the relation betw. Christ and the Christian community or church is spoken of on the basis of Gen 2:24 (cp. the interpretation of the sun as symbol of God, Theoph. Ant. 2, 15 [p. 138, 8], and s. WKnox, St. Paul and the Church of the Gentiles, ’39, 183f; 227f; WBieder, TZ 11, ’55, 329–43).

ⓒ In Rv μ. is used in ref. to the mysterious things portrayed there. The whole content of the book appears as τὸ μ. τοῦ θεοῦ 10:7. Also τὸ μ. τῶν ἑπτὰ ἀστέρων 1:20; τὸ μ. τῆς γυναικός 17:7, cp. vs. 5, where in each case μ. may mean allegorical significance (so BEaston, Pastoral Epistles ’47, 215).

② that which transcends normal understanding, transcendent/ultimate reality, secret, with focus on Israelite/Christian experience.

ⓐ 1 Ti uses μ. as a formula: τὸ μ. τῆς πίστεως is simply faith 3:9. τὸ τ. εὐσεβείας μ. the secret of (our) piety vs. 16.—τὸ μ. τῆς ἀνομίας 2 Th 2:7 s. ἀνομία 1 (Jos., Bell. 1, 470 calls the life of Antipater κακίας μυστήριον because of his baseness practiced in secret. Cp. also SibOr 8, 58 τὰ πλάνης μυστήρια; 56).—PFurfey, CBQ 8, ’46, 179–91.

ⓑ in Ign.: the death and resurrection of Jesus as μ. IMg 9:1 (τὸ περὶ τῆς ἀναστάσεως μ. Orig., C. Cels. 1, 7, 9). The virginity of Mary, her childbearing, and the Lord’s death are called τρία μ. κραυγῆς three mysteries (to be) loudly proclaimed IEph 19:1 (they are mysteries because they go so contrary to human expectation). So also of the annunciation to Mary and her conception GJs 12:2f. The deacons are οἱ διάκονοι μυστηρίων Ἰ. Χρ. ITr 2:3.

ⓒ Quite difficult is the saying about the tried and true prophet ποιῶν εἰς μυστήριον κοσμικὸν ἐκκλησίας who acts in accord with the earthly mystery of (God’s) assembly D 11:11. This may refer to celibacy; the prophet lives in such a way as to correspond to the relation betw. Christ and the people of God; cp. Eph 5:32 (so Harnack, TU II 1; 2, 1884, 44ff; HWeinel, Die Wirkungen d. Geistes u. der Geister 1899, 131–38; PDrews, Hdb. z. d. ntl. Apokryphen 1904, 274ff; RKnopf, Hdb. ad loc.—Differently CTaylor, The Teaching of the Twelve Apost. 1886, 82–92; RHarris, The Teaching of the Ap. 1887; FFunk, Patr. Apostol.² 1901 ad loc.; Zahn, Forschungen III 1884, 301).

ⓓ μ. occurs oft. in Dg: τὸ τῆς θεοσεβείας μ. the secret of (our) piety 4:6 (what Dg means by μ. is detailed in ch. 5). Likew. of Christian teaching (cp. Ps.-Phocyl. 229 and comments by Horst 260–61) πατρὸς μυστήρια 11:2; cp. vs. 5. Hence the Christian can μυστήρια θεοῦ λαλεῖν 10:7. In contrast to ἀνθρώπινα μ. 7:1. οὗ (sc. τ. θεοῦ) τὰ μυστήρια whose secret counsels 7:2 (the divine will for orderly management of the universe). Of God keeping personal counsel κατεῖχεν ἐν μυστηρίῳ … τὴν σοφὴν αὐτοῦ βουλήν 8:10.—Lghtf., St. Paul’s Ep. to the Col. and Phlm. p. 167ff; JRobinson, St. Paul’s Ep. to the Eph. 1904, 234ff; GWobbermin, Religionsgesch. Studien 1896, 144ff; EHatch, Essays on Bibl. Gk. 1889, 57ff; HvSoden, ZNW 12, 1911, 188ff; TFoster, AJT 19, 1915, 402–15; OCasel, D. Liturgie als Mysterienfeier⁵ 1923; JSchneider, ‘Mysterion’ im NT: StKr 104, ’32, 255–78; TArvedson, D. Mysterium Christi ’37; KPrümm, ‘Mysterion’ v. Pls bis Orig.: ZKT 61, ’37, 391–425, Biblica 37, ’56, 135–61; RBrown, The Semitic Background of ‘Mystery’ in the NT, ’68; cp. KKuhn, NTS 7, 61, 366 for Qumran parallels to various passages in Eph and Ro; ABöhlig, Mysterion u. Wahrheit, ’68, 3–40; JFruytier, Het woord M. in de catechesen van Cyrillus van Jerusalem, ’50; ANock, Hellenistic Mysteries and Christian Sacraments, Essays on Religion and the Ancient World II, ’72, 790–820; AHarvey, The Use of Mystery Language in the Bible: JTS 31, ’80, 320–36.—DELG s.v. μύω. M-M. EDNT. TW. Sv.