ile the people had vanished--having probably been killed
off by the Apaches.

I returned to the main camp, leaving, however, two men behind to
search still further for the _casa blanca_. When they returned after
a few days, they reported that nothing could be found, and that the
country was difficult of access. On my return I found the men who had
gone to Casas Grandes back already, bringing with them some provisions
and the first mail for three months.

Two miles east of our camp obsidian was found _in situ_. It was not
in the natural flow, but in round, water-worn pebbles deposited in
the conglomerate. Many of these had been washed out and had rolled
down the hill, where a bushel of them might be collected in a few
hours. The outcrop does not extend over a large area, only about two
hundred yards on one side of the bank.

On January 22d I started eastward toward the Mormon settlement,
passing the watershed at a height of 8,025 feet. After fifteen
miles of travel we arrived at the Mormon colony called Pacheco, and
situated on the Piedras Verdes River. It consists of small wooden
houses lying peacefully on the slope, surrounded by pine forests,
at an elevation of seven thousand feet. A saw-mill bore evidence of
industry. There were sixteen families living here, and as we arrived
some eighty children were just streaming out of school. Near by stood
a kindly looking old man, possibly their teacher. The children, who
ranged in age from seven to eighteen years, were all studying in one
class. They showed remarkably varied physiognomies, yet all looked
healthy and sturdy, and were demure and well-behaved.

We made camp one and a half miles from the village, and in the evening
we were visited by my friend from the sierra and another Mormon. Both
expressed their readiness to serve us in every way they could; we
bought some potatoes and half a hog.

As is the custom with the Mormons, they have several colonies outlying
from a central one. Among these is Cave Valley, about five miles east
to north from Pacheco, immediately upon the river already mentioned. On
the following day I went there with the scientific corps to examine the
cave dwellings of which the Mormons had been speaking. The settlement
(having an elevation 6,850 feet) consisted of eight houses. Knocking
on the door of one of these I walked in, introduced myself, and stated
the purpose of my visit. "How do you do?" said my host; "my name is
Nelson"--as if he ha