by a former proprietor. The density of the vegetation prevented my
taking more precise observations. There is another shallower volcanic
crater to the north of it. Its soil was marshy and covered with cane
and grass, but even in the rainy season it does not collect sufficient
water to turn it into a lake. It might, therefore, be easily drained
and cultivated. To the south-west of this basin, and to the right
of the road to San Pablo, lies the [Tigui-mere.] Tigui-mere. From a
plain of whitish-grey soil, covered with concentric shells as large
as a nut, rises a circular embankment with gently-sloping sides,
intersected only by a small cleft which serves as an entrance, and
which shows, on its edges denuded of vegetation, the loose rapilli of
which the embankment is formed. The sides of this natural amphitheatre
tower more than a hundred feet above its flat base. A path runs east
and west right through the center. The northern half is studded with
cocopalm trees and cultivated plants; the southern portion is full of
water nearly covered with green weeds and slime. The ground consists
of black rapilli.

[Leaf imprints in lava.] From the Tigui-mere I returned to the
hacienda a bank formed of volcanic lava two feet in thickness
and covered with indistinct impressions of leaves. Their state of
preservation did not allow me to distinguish their species, but they
certainly belonged to some tropical genus, and are, according to
Professor A. Braun, of the same kind as those now growing there.

There are two more small lakes half a league to the south-east. The
road leading to them is composed of volcanic remains which cover the
soil, and large blocks of lava lie in the bed of the stream.

[Maycap Lake.] The first of the two, the Maycap Lake, is entirely