slope of the same cone; a second cone is then formed near the first,
on the same base. In the vicinity of the silicious springs are seen
deposits of white, yellow, red, and bluish-grey clays, overlaying
one another in narrow strata-like variegated marl, manifestly the
disintegrated produce of volcanic rocks transported hither by rain
and stained with oxide of iron. These clays perhaps come from the
same rocks from the disintegration of which the silicious earth has
been formed. Similar examples occur in Iceland and in New Zealand;
but the products of the springs of Tibi are more varied, finer,
and more beautiful than those of the Iceland Geysers.

[A world wonder.] The wonderful conformations of the red cone are
indeed astonishing, and hardly to be paralleled in any other quarter
of the world. [106]


CHAPTER XIV


[Quinali river.] On my second journey in Camarines, which I undertook
in February, I went by water from Polangui, past Batu, as far as
Naga. The Quinali, which runs into the south-eastern corner of the
lake of Batu, runs out again on the north side as the Bicol River,
and flows in a north-westerly direction as far as the Bay of San
Miguel. It forms the medium of a not inconsiderable trade between Albay
and Camarines, particularly in rice; of which the supply grown in the
former province does not suffice for the population, who consume the
superfluity of Camarines. The rice is conveyed in large boats up the
river as far as Quinali, and thence transported further on in carabao
carts; and the boats return empty. During the dry season of the year,