differed somewhat in these respects from those dwelling higher in
the mountains.


DIVISION OF TERRITORY.

In their original tribal settlements, at the time the first
pioneer whites came among them, the Indians had well defined or
understood boundary lines, between the territories claimed by
each tribe for their exclusive use in hunting game and gathering
means of support; and any trespassing on the domain of others was
likely to cause trouble. This arrangement, however, did not apply
to the higher ranges of the Sierras, which were considered common
hunting ground.


COMMERCE AMONG THE TRIBES.

As there was a difference in the natural products and resources
of different sections of the country, there was a system of
reciprocal trade in the exchange of the different desirable
commodities. Sometimes commerce between tribes extended for a
long distance, as, for instance, the Indians on the western side
of the Sierra Nevada Mountains were entirely dependent upon the
Pai-utes _(Pye-yutes´)_ on the eastern side for the obsidian, a
kind of volcanic glass, from which they made the points for their
most deadly arrows, used in hunting large game or when in mortal
combat with their enemies. They were also dependent upon the
Pai-utes for their supply of salt for domestic use, which came in
solid blocks as quarried from salt mines, said to be two days'