Addison, Joseph: Remarks on several parts of Italy: &c. in the years 1701, 1702, 1703 (London: Tonson, 1718)

184 Towns wit bin the
Itur. ad Hercules gelidas qua Tiburis ar-
ces,
Canaque fulphureis Albula famat aquis.
L. i. Ep. y.
As from high Rome to Tivoli you go,
Where Albula's sulphureous W aters ssow.
The little Lake that gives Rise to this
River, with its ssoating Issands, is one
of the most extraordinary natural Curi-
osities about Rome. It lyes in the very
Flat of Campania^ and as it is the Drain
of these Parts, ’tis no Wonder that it
is so impregnated with Sulphur. It has
at Bottom so thick a Sediment of it,
that upon throwing in a Stone the Wa-
ter boils for a considerable time over the
Place which has been stirr’d up. At the
same time are seen little Flakes of Scurfe
riling up, that are probably the Parts
which compose the Issands, for they of-
ten mount of themselves, tho’ the Wa-
ter is not troubled.
I question not but this Lake was for-
merly much larger than it is at present,
and that the Banks have grown over it
by degrees, in the same manner as the
Issands have been form’d on it. Nor is
it improbable but that, in Process of
Time,