es, the modern about 1,000,000 acres. The
chief modern work is the anicut across the Coleroon, 2250 ft. long,
constructed by Sir Arthur Cotton between 1836 and 1838. The Cauvery
Falls have been utilized for an electric installation, which supplies
power to the Kolar gold-mines and light to the city of Mysore.

The Cauvery is known to devout Hindus as Dakshini Ganga, or the Ganges
of the south, and the whole of its course is holy ground. According to
the legend there was once born upon earth a girl named Vishnumaya or
Lopamudra, the daughter of Brahma; but her divine father permitted her
to be regarded as the child of a mortal, called Kavera-muni. In order to
obtain beatitude for her adoptive father, she resolved to become a river
whose waters should purify from all sin. Hence it is that even the holy
Ganges resorts underground once in the year to the source of the
Cauvery, to purge herself from the pollution contracted from the crowd
of sinners who have bathed in her waters.

CAVA DEI TIRRENI, a town and episcopal see of Campania, Italy, in the
province of Salerno, 6 m. N.W. by rail from the town of Salerno. Pop.
(1901) town, 7611; commune, 23,415. It lies fairly high in a richly
cultivated valley, surrounded by wooded hills, and is a favourite resort
of foreigners in spring and autumn, and of the Neapolitans in summer. A
mile to the south-west is the village of Corpo di Cava (1970 ft.), with
the Benedictine abbey of La Trinita della Cava, founded in 1025 by St
Alferius. The church and the greater part of the buildings were entirely
modernized in 1796. The old Gothic cloisters are preserved. The church
contains a fine organ and several ancient sarcophagi. The archives, now
national property, include documents and MSS. of great value (e.g. the
_Codex Legum Longobardorum_ of 1004) and fine _incunabula_. The abbot is
keeper, and also head of a boarding school.

See M. Morcaldi, _Codex Diplomaticus Cavensis_ ( Naples and Milan,
1873-1893).

CAVAEDIUM, in architecture, the Latin name for the central hall or court
within a Roman house, of which five species are described by Vitruvius.
(1) The _Tuscanicum_ responds to the greater number apparently of those
at Pompeii, in which the timbers of the roof are framed together, so as
to leave an open space in the centre, known as the compluvium; it was
through this opening that all the light was received, not only in the
hall itself, but in the rooms round. The rai