laboratory man; Mr. A. M. Stephen was the archæologist, assisted
by Mr. R. Abbott; Messrs. C. V. Hartman and C. E. Lloyd were the
botanists, Mr. F. Robinette the zoölogical collector, and Mr. H. White
the mineralogist of the expedition.

All the scientific men were provided with riding animals, while the
Mexican muleteers generally rode their own mounts. Our outfit was
as complete as it well could be, comprising all the instruments
and tools that might be required, besides tents and an adequate
allotment of provisions, etc. All this baggage had to be transported
on mule-back. We were, all in all, thirty men, counting the scientific
corps, the guides, the cooks, and the muleteers, and we had with us
nearly a hundred animals--mules, donkeys, and horses--as we crossed
the sierra.

It was a winter campaign, and from Nacori, in Sonora, to Casas
Grandes, in Chihuahua, we were to make our own trail, which we did
successfully. Ancient remains were almost as rare as in the rest of
the Sierra Madre del Norte; yet traces of ancient habitations were
found in the shape of stone terraces, which had evidently served
agricultural purposes, and at some places rude fortifications were
seen. In the eastern part we came upon a considerable number of
caves containing house Croups, the builders of which, generally,
rested in separate burial-caves. In the same locality, as well as
in the adjacent plains of San Diego, Chihuahua, we found numerous
mounds covering house groups, similar in construction to those in the
caves. From underneath their floors we unearthed about five hundred
beautifully decorated pieces of pottery.

Among the further results of the expedition may be mentioned the