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 long remained unpublished, and of the twelve volumes of manuscript seven are lost. The remainder were published in Paris, 1841-45, in an abridged form, and of the five manuscript volumes three are in public hands, and two belong to the families of two famous engineers, Augoyat and Haxo. At the Hague (1737–1742) appeared, dedicated to Frederick of Prussia, De Hondt’s edition of De l’attaque et defense, &c., and of this work an improved edition appeared subsequently. But the first satisfactory editions are those of Augoyat and Valazé mentioned above.

.—Fontenelle, “Éloge de Vauban” (Mem. Acad. Sciences, 1707); D’Arçon, Considérations sur le génie de Vauban (Paris, 1780); Carnot, Éloge de Vauban (Paris, 1784) (followed by a critical Lettre à l’académie, published at La Rochelle, 1785, and Carnot’s rejoinder, Observations sur la lettre, &c., Paris, 1785); Dembarrère, Éloge historique de Vauban (Paris, 1784); D’Autilly, Éloge de Vauban (Paris, 1788); Sauviac, Éloge, &c. (Paris, 1790); Chambray, Notice historique sur Vauban (Paris, 1845); Goulon, Mémoires sur l’attaque et défense d’une place (Paris and Hague, 1740; Amsterdam, 1760; Paris, 1764); works by Abbé du Fay (Paris, 1681) and Chevalier de Cambray (Amsterdam, 1689), from which came various works in English, French, &c. For an account of these works and others which appeared subsequently, see Max Jähns, ''Gesch. der Kriegswissenschaften'', ii. 1442-47. Allent, Histoire du corps de génie (Paris, 1805); Humbert, L’Art du génie (Berlin, 1785); Hoyer, ''Gesch. der Kriegskunst'' (Göttingen, 1797); Ambert, Le Ml. de Vauban (Tours, 1882); Histoire de Vauban (Lille, 1844); Tripier, La Fortification déduite de son histoire (Paris, 1866); Brese-Winiari, Über Entstehen und Wesen der neueren Befestigungsmethode (Berlin, 1844); Augoyat, Aperçu historique sur les fortifications, &c. (Paris, 1860); Abrégé des services du Maréchal Vauban (Paris, 1839), and the works mentioned above. See also, of shorter works, Revue des deux mondes (Aug. 1864 and Oct. 1870); Spectateur militaire (1830); Neues militärisches Journal, x. (1803); Jahrbücher für die deutsche Armée und Marine (1874); Böhms Magazin, xi. (Giessen, 1789); ''Archiv für die Art. und Ingenieur-Offiziere'', xxviii. (Berlin, 1850).

VAUCLUSE, a department of south-eastern France, formed in 1793 out of the countship of Venaissin, the principality of Orange, and a part of Provence, and bounded by Drôme on the N., Basses-Alpes on the E., Bouches-du-Rhône (from which it is separated by the Durance) on the S., and Gard and Ardèche (from which it is separated by the Rhone) on the W. It has also an enclave, the canton of Valreas, in the department of Drôme. Pop. (1906) 239,178. Area, 1381 sq. m. The western third of Vaucluse belongs to the Rhone valley, and consists of the rich and fertile plains of Orange, Carpentras and Cavaillon. To the east, with a general west-south-west direction and parallel to one another, are the steep barren ranges of Ventoux, Vaucluse and Luberon, consisting of limestones and sandstones. The first-mentioned, which is the most northerly, has a maximum elevation of 6273 ft.; the culminating peak, on which is a meteorological observatory, is isolated and majestic. The Vaucluse chain does not rise above 4075 ft. The most southerly range, that of Luberon (3691 ft.), is rich in palaeontological remains of extant mammals (the lion, gazelle, wild boar, &c). The Rhone is joined on the left by the Aygues, the Sorgue (rising in Petrarch’s celebrated fountain of Vaucluse, which has given its name to the department), and the impetuous Durance. The Sorgue has an important tributary in the Ouveze and the Durance in the Coulon (or Calavon). These and other streams feed the numerous irrigation canals (Canal de Pierrelatte, Canal de Carpentras, &c.) to which is largely due the success of the farmers and market-gardeners of the department. The climate is that of the Mediterranean region. The valley of the Rhone suffers from the mistral, a cold and violent wind from N.N.W.; but the other valleys are sheltered by the mountains, and produce the oleander, pomegranate, olive, jujube, fig, and other southern trees and shrubs. The mean annual temperature is 55° F. at Orange and 58° at Avignon; the extremes of temperature are 5° and 105° F. Snow is rare. The south wind, which is frequent in summer, brings rain. The average annual rainfall is 29 in. in the hill region and 22 in the plains.

Wheat, potatoes, and oats are the most important crops; sugar-beet, sorghum, millet, ramie, early vegetables and fruits, among which may be mentioned the melons of Cavaillon, are also cultivated, and to these must be added the vine, olive and mulberry. The truffles of the regions of Apt and Carpentras. and the fragrant herbs of the Ventoux range, are renowned. Sheep are the principal live-stock, and mules are also numerous. Lignite and sulphur are mined; rich deposits of gypsum, fire-clay, ochre, &c, are worked. Montmirail has mineral springs of some repute. The industrial establishments include silk mills, silk-spinning factories, oil mills, flour mills, paper mills, wool-spinning factories, confectionery establishments, manufactories of pottery, earthenware, bricks, mosaics, tinned provisions, chemicals, candles, soap and hats, breweries, puddling works, iron and copper foundries, cabinet workshops, blast furnaces, sawmills, edge-tool workshops and nursery gardens. Coarse cloth, carpets, blankets, and ready-made clothes are also produced. The department is served by the Paris-Lyon-Mediterranee railway, and the Rhone is navigable for 40 m. within it. It is divided into 4 arrondissements (Avignon, Apt, Carpentras and Orange), 22 cantons and 150 communes. Avignon, the capital, is the seat of an arch-bishop. The department belongs to the region of the XV. army corps and to the académie (educational circumscription) of Aix, and has its appeal court at Nimes.

Avignon, Apt, Carpentras, Cavaillon, Orange and Vaison, the most noteworthy towns, are treated separately, and the interesting abbey of Senanque, of Romanesque architecture. Other places of interest are Gordes, with a town hall of Renaissance architecture; Pernes, which has a church of the 11th century and medieval fortifications; La Tour d’Aigues, with fine ruins of the Renaissance chateau of the barons of Central Bonnieux, near which there is a bridge of the 2nd or 3rd century over the Calavon; Venasque, of Gallo-Roman or even earlier origin, with a baptistery of the 8th or 9th century; and Le Thor, with a fine church in the Provencal Romanesque style.

VAUD (Ger. Waadt), one of the cantons of south-western Switzerland. Its total area is 1255.2 sq. m. (thus ranking after the Orisons, Bern and the Valais), of which 1056.7 sq. m. are reckoned as “productive” (forests covering 320.1 sq. m. and vineyards 24.9 sq. m., this last region being more extensive than in any other canton). Of the rest, 160 sq. m. are occupied by the portions of various lakes partly in the canton (Geneva, 123 sq. m.; Neuchâtel, 33 sq. m.; and Morat, 35 sq. m.) and 4.3 by glaciers, the loftiest point in the canton being the Diablerets (10,650 ft.). The canton is of very irregular shape, as it owes its artificial existence solely to historical causes. It includes practically the whole northern shore of the Lake of Geneva, while it stretches from the “Alpes Vaudoises” and Bex, on the S.E., to the Jura and the French frontier, on the N.W. A long narrow tongue extending past Payerne (Peterlingen) to the Lake of Neuchâtel is just disconnected with the Avenches region that forms an “enclave” in the canton of Fribourg, while in the canton of Vaud, Fribourg holds the two “enclaves” of Vuissens and Surpierre. A small stretch of the right bank of the Rhone (from Bex to the Lake of Geneva) is within the canton, while various short streams flow down into the Lake of Geneva. But the more northerly portion of the canton, beyond the Jorat range, to the north of Lausanne, and in particular the valley of the Broye, belongs to the Aar, and so to the Rhine basin. The canton is thus hilly rather than mountainous, save at its south-eastern extremity. It is well supplied with railways, including that along the northern shore of the Lake of Geneva, while from Bex through Vallorbes runs the main Simplon line towards Paris. There are also numerous “regional” or small-gauge railways, as well as mountain lines from Montreux past Glion up the Rochers de Naye, and from Vevey up the Mont Pelerin, not to speak of that (“Montreux-Oberland” line) direct to the head of the Sarine valley and so by the Simme valley to the Lake of Thun. In 1900 the population was 281,279, of whom 243,463 were French-speaking, 24,372 German-speaking, and 10,667 Italian-speaking, while 242,811 were Protestants (Calvinists, whether of the larger église nationale or of the smaller église libre, founded in 1847), 36,980 Romanists, and 1076 Jews. Agriculture is the main occupation of the inhabitants: the land is much subdivided and very highly cultivated.

The vineyards give employment to great numbers of people. Much more white wine is produced than red wine. The best white wines of the canton are Yvorne (near Aigle) and La Côte (west of Lausanne), while the vineyard of Lavaux (east of Lausanne) produces both red and white wine. There is not very much industry in the canton, though at Ste Croix in the Jura watches and musical boxes are made, while at Payerne tobacco is grown. Many foreigners reside in the canton, partly for reasons of health, partly on account of the educational advantages that it offers. They chiefly favour Lausanne, Vevey and the collection of hamlets known as