tions from his lectures under the titles Geschichte der Erdkunde (1851), Allgemeine Erdkunde (1862), and Europa (1863). Several of his works (e.g., the "Palestine" volumes of his Erdkunde) have been translated into English.
See Kramer, Carl Ritter, ein Lebensbild (1864 and 1870, 2d ed. 1875); Gage, The Life of Carl Ritter (Edinburgh, 1867); Guyot, Carl Ritter, an address to the American Geogr. and Stat. Soc. (Princeton, 1860); F. Marthe, "Was bedeutet Carl Ritter für die Geographie," in Zeitsch. der Ges. f. Erik., Berlin, 1879.
RIVAROL, ANTOINE DE (1753-1801), was born at Bagnols in Languedoc on the 26th June 1753, and died at Berlin on the 13th April 1801. It seems to be undisputed that his father was an innkeeper, but no researches have thrown any certain light on the question of his origin ; later he assumed the title of Comte de Rivarol, and attributed himself to a noble family of Italian origin. His enemies declared that the family name was really Riverot, and that, whether Italian or not, it had nothing whatever to do with countship. It is certain that he bore several names, and that when he was among the foremost defenders of aristocracy his claim to share in it was by no means allowed by his associates. He was well educated, and is said to have been admitted by the bishop of Uzes to a theological seminary, then to have held a tutorship at Lyons under the name of Longchamps, then to have appeared in Paris under the further travesty of Chevalier de Parcieux with no better reason than that his mother was related to a man of science of that name. All this, however, is of very little consequence ; it is sufficient that he appeared in Paris in 1780 (just when the operation of liberal ideas was throwing society most freely open to men of letters), with youth, good address, fair knowledge, and a very unusual stock of wit and literary ability. After competing for and sometimes winning several of the aca- demic prizes then in greatest vogue, Rivarol distinguished himself in the year 1784 by a treatise Sur Vuniversalite de la langue Franchise (which shows, if not much learning, the utmost critical acumen and a very happy faculty of expres- sion), and by a translation of the Inferno, very free but of no small merit. The year before the Revolution broke out he, with some assistance from a man of similar but lesser talent, Champcenetz, compiled a lampoon entitled Petit Almanack de nos grands Hommes pour 1788, in which some writers of actual or future talent and a great many nobodies were ridiculed in the most pitiless manner. It made him many enemies, but scarcely more than his speeches in society had made. When the Revolution developed the importance of the press, Rivarol at once took up arms on the royalist side. The Journal Politique of Sabatier de Castres and the Actes des Apotres of Peltier were the chief papers in which he wrote. But he emigrated early in June 1792, and established himself at Brussels, whence he removed successively to London, Hamburg, and Berlin. For ten years he occupied himself not too strenuously with political pamphlets and literary projects, receiving pensions for his services to the royalist cause. He had married an Englishwoman, but had quarrelled with her, and during his later years had for his companion a pretty but totally uneducated girl named Manette, to whom he addressed certain often-quoted verses which are nearly poetry. Rivarol's genius, however, was essentially a genius of prose, though not a prosaic genius. No single work of his of any length has very great merit, and he is accordingly only known to posterity by volumes of " beauties " and selec- j tions, composed of epigrammatic remarks, short passages of criticism, and the like. Rivarol could not tell an anecdote ; with quite the point of his contemporary and rival Cham- fort ; but he has had no rival in France except Piron, and ' none in England except Sydney Smith, in sharp isolated conversational sayings. These were mostly ill-natured, and in some cases the full appreciation of them demands a more considerable acquaintance with the facts and men of the time than most readers possess. The brilliancy of Rivarol's phrase, however, can escape no one. Burke was hyperboli- cal, and not altogether happily hyperbolical, in calling him the Tacitus of the Revolution, because the description sug- gests a power of historical portrait painting which Rivarol did not possess. But the expression no doubt really re- ferred to the detached phrases which are so striking in Tacitus, and which Rivarol did in truth sometimes equal. The works of Rivarol were published in five volumes by his friend Chenedolle (who has. reported much remarkable conversation of his in his last days) and Fayolle (Paris, 1805) ; but their perusal as a whole can only be recommended to the student of literature. Selections are frequent: that published by De la Hays (Paris, 1858), with introductory matter by Sainte-Beuve and others, and that edited in 1862 by M. de Lescurc, may be specified. The last- i named editor published, in 1883, a study on Rivarol et la Soctttt Franqaise, which is the fullest treatment of the subject.
RIVE DE GIER, a town of France, in the department of Loire, situated 13 miles to the east-north-east of St Etienne, on the Lyons Railway at the head of the canal of Givors on the Gier. The town, which is constantly enveloped in a dense cloud of smoke, and presents a dirty and unattractive appearance, is principally dependent on the coal industry, there being fifty pits in the basin of the Gier, with an annual output of over 19,000,000 bushels. There are twenty-two coke and lamp black furnaces, and five glass works, the products of which coloured glass and so-called i Nuremberg mirrors are celebrated, on account of the fineness and purity of the sand found on the banks of the | Rhone and the Saone. Mining machinery, railway plant, and coarse ironmongery are also manufactured, and there are iron and steel works. A large number of persons are also employed in winding and spinning silk and in tape- weaving. The population in 1881 was 15,760. Rive de Gier is a place of some antiquity, as appears from remains of Gallo-Roman buildings, and mosaics and coins found at various times. In the llth century the canons of Lyons were its superiors. At a later period the town was surrounded by a wall and protected by a fortress, of which, however, but few traces are visible. In the time of Henry IV. the working of the mines had already given to the locality a measure of importance which has steadily increased. At one time it was feared that the coal basin, which was considered distinct from that of St Etienne, would soon be exhausted, but it has now been proved that the two are in reality one, and that they have a long future before them.
RIVER. See Geology, vol. x. p. 272–278.
RIVER ENGINEERING. The improvement of rivers Plate V. may be considered under two aspects, for rivers form the natural channels for conveying the surplus rainfall from the districts through which they pass to the sea, and they can also be utilized for the purposes of inland navigation. If a river, owing to the small section of its channel, or the slight inclination of its bed, is incapable of discharging the whole volume of water which drains into it in rainy seasons, the lands along its banks become flooded, frequently to the great detriment of the crops, and sometimes with disastrous results to life and property. If, on the other hand, a river is impeded by rapids, by shoals, or by a bar at its mouth, it is prevented from serving as a natural highway for the traffic of the district through which it flows. Accordingly the mitigation of floods and the regulation of rivers are the problems which have 'to be grappled with in the engineering of rivers. The first aims at remedying an existing evil, and the second deals with the development of the resources and trade of a country by the improve- ment of its water communications. Floods. Floods are of two" kinds, according to the nature Two of the country traversed by the rivers producing them. Tor- kinds of rential rivers, flowing over impermeable strata and having c a rapid fall, rise rapidly after a heavy rainfall, and produce a high flood which quickly subsides. Gently flowing rivers on the contrary rise slowly, and do not attain the same height as torrential rivers ; but their floods subside slowly, and consequently, though less high, remain longer
