ibi I had an opportunity of sketching Mount Malinao
(called also Buhi and Takit), which from this side has the appearance
of a large volcano with a distinct crater. From the lake of Buhi it
is not so clearly distinguishable.

[Igabo hot spring.] Not far from Tibi, exactly north-east of Malinao,
we found a small hot spring called Igabo. In the middle of a plot of
turf encircled by trees was a bare spot of oval form, nearly a hundred
paces long and seventy wide. The whole space was covered with stones,
rounded by attrition, as large as a man's head and larger. Here
and there hot water bubbled out of the ground and discharged into a
little brook; beside it some women were engaged in cooking their food,
which they suspended in nets in the hottest parts of the water. On the
lower surfaces of some of the stones a little sulphur was sublimated;
of alum hardly a trace was perceptible. In a cavity some caolin had
accumulated, and was used as a stain.

[Naglegbeng silicious springs.] From here I visited the stalactite
springs, not far distant, of Naglegbeng. [105] I had expected to
see a calcareous fountain, but found the most magnificent masses of
silica of infinite variety of form; shallow cones with cylindrical
summits, pyramidal flights of steps, round basins with ribbed margins,
and ponds of boiling water. One spot, denuded of trees, from two
to three hundred paces in breadth and about five hundred in length,
was, with the exception of a few places overgrown with turf, covered
with a crust of silicious dross, which here and there formed large
connected areas, but was generally broken up into flaky plates by the
vertical springs which pierced it. In numerous localities boiling
hot mineral water containing silica was forcing itself out of the
ground, spreading itself over the surface and depositing a crust,
the thickness of which depended on its distance from the center
point. In this manner, in the course of time, a very flat cone is
formed, with a basin of boiling water in the middle. The continuous
deposit of dross contracts the channel, and a less quantity of water
overflows, while that close to the edge of the basin evaporates and
deposits a quantity of fine silicious earth; whence the upper portion
of the cone not only is steeper than its base, but frequently assumes
a more cylindrical form, the external surface of which on account
of the want of uniformity in the overflow, is ribbed in the form
of stalactites. When th