the tradition (perhaps not unconnected with the virgin purity of the water)
that a girl once pointed out the sping to the military engineers of
Agrippa. The aqueduct was restore by Claudius in A.D. 46 (to which
fact the inscription mentioned above refers), and later by the popes
Hadrian I. and Nicholas V. In 1453 the latter pope conducted hither the
main stream of the aqueduct, and the fountain then exchanged its an-
cient name for its present name of Trevi (a corruption of 'Trivio'), which
it derives from its three outlets. This aqueduct yields daily upwards
of 17 ½ million gallons of water, perhaps the best in Rome. The foun-
tains in the Piazza di Spagna, the Piazza Navona, and the Piazza Farnese
are supplied from the same source. — On quitting Rome travellers used
to take a draught from this fountain and throw a coin into the basin, in
the pious belief that their return was thus ensured.

The Via delle Muratte (at No. 78 in which Donizetti lived;
tablet) leads to the S.W. from the fountain to the Corso (p. 230).
Opposite the fountain is Santi Vincenzo ed Anastasio (Pl. II, 21),
erected in 1650 by Cardinal Mazarin, with its picturesque faéade,
from designs by M. Lunghi the Younger. In its crypt are preserved
the hearts of the popes since Sixtus V. — The Via di San Vin-
cenzo, called farther on Via de' Lucchesi, and then (beyond the
Piazza Pilotta) the Via Pilotta (p. 202), leads, to the Palazzo
Colonna (p. 243). (From the Via de' Luechesi the Via della Dataria
leads on the left to the Quirinal; p. 203.)


b. Via Sistina. The Ludovisi Quarter. Quattro Fontane.
Via Venti Settembre.

The Via Sistina (Pl. I, 21), which begins at the top of the Scala
di Spagna and runs thence to the S.E., was, as already mentioned
on p. 177, one of the new streets constructed by Sixtus V. From
the top of the Pincio it descends into the hollow between that hill
and the Quirinal, then, with its continuation the Via Quattro Fon-
tane (p. 187), crosses first the crest of the Quirinal and, beyond
another hollow, that of the Viminal, and finally, under the name
of Via Agostino Depretis, ends on the Esquiline at the church of
Santa Maria Maggiore (p. 206), which fills in the vista from the
higher points along the entire line of streets.

To the right, immediately at the beginning of the street, close
to the Piazza Trinita de' Monti, Via Sistina 64, is the Casa Zuccari
(Pl. I, 21), once the house of the family of the artists of that name.
No. 48, farther on, on the right, was the residence of Thorvaldsen
(comp. p. 187; tablet on the staircase); and No. 72 (on the left;
now the Hôt. Lavigne) was occupied by Angelica Kauffmann when
Goethe Visited Rome.

The Via di Porta Pinciana, which diverges to the left farther
on, forms the W. boundary of the new Ludovisi Quarter and leads
past the Villa Malta (Pl. I, 20; now the property of the German
chancellor Prince Bülow) to the Porta Pinciana (p. 187). — Farther
on in the Via Sistina, No. 126, to the left, is the house where Gogol,
the Russian author, lived in 1838-42 (inscription).