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 in the Monte Cervati (6229 ft.); and on the east side of this is the Gulf of Policastro, where the province of Salerno, and with it Campania, borders, on the province of Potenza.

The population of Campania was 3,080,503 in 1901; that of the province of Caserta was 705,412, with a total of 187 communes, the chief towns being Caserta (32,709), Sta Maria Capua Vetere (21,825), Maddaloni (20,682), Sessa Aurunca (21,844); that of the province of Benevento was 256,504, with 73 communes, the only important town being Benevento itself (24,647); that of the province of Naples 1,151,834, with 69 communes, the most important towns being Naples (563,540), Torre del Greco (33,299), Castellammare di Stabia (32,841), Torre Annunziata (28,143), Pozzuoli (22,907); that of the province of Avellino (Principato Ulteriore in the days of the Neapolitan kingdom) 402,425, with 128 communes, the chief towns being Avellino (23,760) and Ariano di Puglia (17,650); that of the province of Salerno (Principato Citeriore) 564,328, with 158 communes, the chief towns being Salerno (42,727), Cava dei Tirreni (23,681), Nocera Inferiore (19,796). Naples is the chief railway centre: a main line runs from Rome through Roccasecca (whence there is a branch via Sora to Avezzano, on the railway from Rome to Castellammare Adriatico), Caianello (junction for Isernia, on the line between Sulmona and  Campobasso or Benevento), Sparanise (branch to Formia and Gaeta) and Caserta to Naples. From Caserta, indeed, there are two independent lines to Naples, while a main line runs to Benevento and Foggia across the Apennines. From Benevento railways run north to Vinchiaturo (for Isernia or Campobasso) and south to Avellino. From Cancello, a station on one of the two lines from Caserta to Naples, branches run to Torre Annunziata, and to Nola, Codola, Mercato, San Severino and Avellino. Naples, besides the two lines to Caserta (and thence either to Rome or Benevento), has local lines to Pozzuoli and Torregaveta (for Ischia) and two lines to Sarno, one via Ottaiano, the other via Pompeii, which together make up the circum-Vesuvian electric line, and were in connexion with the railway to the top of Vesuvius until its destruction in April 1906. The main line for southern Italy passes through Torre Annunziata (branch for Castellammare di Stabia and Gragnano), Nocera (branch for Codola), Salerno (branch for Mercato San Severino), and Battipaglia. Here it divides, one line going east-south-east to Sicignano (branch to Lagonegro), Potenza and Metaponto (for Taranto and Brindisi or the line along the east coast of Calabria to Reggio), the other going south-south-east along the west coast of Calabria to Reggio.

Industrial activity is mainly concentrated in Naples, Pozzuoli and the towns between Naples and Castellammare di Stabia (including the latter) on the north-east shores of the Bay of Naples. The native peasant industries are (besides agriculture, for which see ) the manufacture of pottery and weaving with small hand-looms, both of which are being swept away by the introduction of machinery; but a government school of textiles has been established at Naples for the encouragement of the trade.

 CAMPANI-ALIMENIS, MATTEO, Italian mechanician and natural philosopher of the 17th century, was born at Spoleto. He held a curacy at Rome in 1661, but devoted himself principally to scientific pursuits. As an optician he is chiefly celebrated for the manufacture of the large object-glasses with which G. D. Cassini discovered two of Saturn’s satellites, and for an attempt to rectify chromatic aberration by using a triple eye-glass; and in clock-making, for his invention of the illuminated dial-plate, and that of noiseless clocks, as well as for an attempt to correct the irregularities of the pendulum which arise from variations of temperature. Campani published in 1678 a work on horology, and on the manufacture of lenses for telescopes. His younger brother Giuseppe was also an ingenious optician (indeed the attempt to correct chromatic aberration has been ascribed to him instead of to Matteo), and is, besides, noteworthy as an astronomer, especially for his discovery, by the aid of a telescope of his own construction, of the spots in Jupiter, the credit of which was, however, also claimed by Eustachio Divini.

 CAMPANILE, the bell tower attached to the churches and town-halls in Italy (from campana, a bell). Bells are supposed to have been first used for announcing the sacred offices by Pope Sabinian (604), the immediate successor to St Gregory; and their use by the municipalities came with the rights granted by kings and emperors to the citizens to enclose their towns with fortifications, and assemble at the sound of a great bell. It is to the Lombard architects of the north of Italy that we are indebted for the introduction and development of the campanile, which, when used in connexion with a sacred building, is a feature peculiar to Christian architecture—Christians alone making use of the bell to gather the multitude to public worship. The campanile of Italy serves the same purpose as the tower or steeple of the churches in the north and west of Europe, but differs from it in design and position with regard to the body of the church. It is almost always detached from the church, or at most connected with it by an arcaded passage. As a rule also there is never more than one campanile to a church, with a few exceptions, as in S. Ambrogio, Milan; the cathedral of Novara; S. Abbondio, Como; S. Antonio, Padua; and some of the churches in south Italy and Sicily. The design differs entirely from the northern type; it never has buttresses, is very tall and thin in proportion to its height, and as a rule rises abruptly from the ground without base or plinth mouldings undiminished to the summit; it is usually divided by string-courses into storeys of nearly equal height, and in north and central Italy the wall surface is decorated with pilaster strips and arcaded corbel strings. Later, the square tower was crowned with an octagonal turret, sometimes with a conical roof, as in Cremona and Modena cathedrals. As a rule the openings increase in number and dimensions as they rise, those at the top therefore giving a lightness to the structure, while the lower portions, with narrow slits only, impart solidity to the whole composition.

The earliest examples are those of the two churches of S. Apollinare in Classe (see, fig. 8) and S. Apollinare Nuovo at Ravenna, dating from the 6th century. They are circular, of considerable height, and probably were erected as watch towers or depositories for the treasures of the church. The next in order are those in Rome, of which there are a very large number in existence, dating from the 8th to the 11th century. These towers are square and in several storeys, the lower part quite plain till well above the church to which they are attached. Above this they are divided into storeys by brick cornices carried on stone corbels, generally taken from ancient buildings, the lower storeys with blind arcades and the upper storeys with open arcades. The earliest on record was one connected with St Peter’s, to the atrium of which, in the middle of the 8th century, a bell-tower overlaid with gold was added. One of the finest is that of S. Maria-in-Cosmedin, ascribed to the 8th or 9th century. In the lower part of it are embedded some ancient columns of the Composite Order belonging to the Temple of Ceres. The tower is 120 ft. high, the upper part divided into seven storeys, the four upper ones with open arcades, the bells being hung in the second from the top. The arches of the arcades, two or three in number, are recessed in two orders and rest on long impost blocks (their length equal to the thickness of the wall above), carried by a mid-wall shaft. This type of arcade or window is found in early German work, except that, as a rule, there is a capital under the impost block. Rome is probably the source from which the Saxon windows were derived, the example in Worth church being identically the same as those in the Roman campanili. In the campanile of S. Alessio there are two arcades in each storey, each divided with a mid-wall shaft. Among others, those of SS. Giovanni e Paolo, S. Lorenzo in Lucina, S. Francesca Romana, S. Croce in Gerusalemme, S. Giorgio in Velabro (fig. 1), S. Cecilia, S. Pudenziana, S. Bartolommeo in Isola (982), S. Silvestro in Capite, are characteristic examples. On some of the towers are encrusted plaques of marble or of red or green porphyry, enclosed in a tile or moulded brick border; sometimes these plaques are in majolica with Byzantine patterns.

The early campanili of the north of Italy are of quite another type, the north campanile of S. Ambrogio, Milan (1129), being 