in. 57 deg. Fahr.), whereas during the day the temperature was hot--max. 97 deg.
F. As early as 9 a.m. the thermometer already registered 85 deg. in the
shade, and not a breath of wind. The elevation was 1,150 ft. The sky was
in streaky horizontal clouds to the east, and thin misty clouds to the
south--cirro-stratus.

One of my horses having strayed away a long distance, we only left that
camp in the afternoon after the animal had been recovered. We rose
quickly over the usual red volcanic sand held down in its place by the
vegetation--rather anaemic at that particular spot. Higher up we again
sank in the white and yellow ashes, with occasional zones covered by
small, angular, black-baked debris.

Ants seemed to flourish happily in that region, for the ant-heaps were
innumerable and of great size, several with towers about 6 ft. in height,
resembling miniature mediaeval castles.

Having risen--all the time over grey and white ashes--to 1,420 ft., we
found ourselves again upon open campos with a splendid view of the
flat-topped range we had already seen to the north and of another to the
south. At the angle where the northern range changed its direction
slightly there stood a high prominence of peculiar appearance. The range
extended west, where it ended, into a broken cone--as I have already
stated quite separated by erosion from the main range. All along the
range in the section between the prominence at the angle and the terminal
cone could be noticed three distinct level terraces and several
intermediate ones--not yet well defined nor continuous along the whole
face of the range. About half-way along its length, a semi-cylindrical
vertical cut was a striking feature, and appeared from a distance to be
the remains of an extinct crater. It may be noted that where that crater
was, the range was higher than elsewhere. Its summit, with an undulating
sky-line, lay to the west of it, no doubt formed by erupted matter. Other
great vertical furrows were noticeable not far from the crater and to the
west of it.

The scenery was getting stranger and stranger every day. We began to
notice solitary domes and cones in the landscape. That day, in fact,
beyond the great campos we had before us a curious little well-rounded
dome, standing up by itself upon an absolutely flat surface, at a
considerable distance from the flat tableland which stood on one side,
and of which formerly it evidently made part. Higher mountains, somewhat