gnal announced the discovery of the advancing force, which had been
expected, and he could be distinctly seen from the surrounding region.
As many of the enemy were still scattered over the neighborhood,
some of them would not have been able to recognize this signal had
he ridden to and from an observer, but the circle produced a lateral
movement visible from any point.

---- Of enemies, or other game than Buffalo. See also NOTES ON
CHEYENNE AND ARAPAHO SIGNALS.

The discovery of enemies is indicated by riding rapidly around in a
circle, so that the signal could be seen by their friends, but out of
sight of the discovered enemy. (_Dakota_ I.)

When enemies are discovered, or other game than buffalo, the sentinel
waves his blanket over his head up and down, holding an end in each
hand. (_Omaha_ I; _Ponka_ I.)

---- Of game, wood, water, &c.

This is communicated by riding rapidly forward and backward on the top
of the highest hill. The same would be communicated with a blanket
by waving it right and left, and then directly toward the game or
whatever the party might be searching for, indicating that it is not
to the right or to the left, but directly in front. (_Dakota_ I.)

DRILL, MILITARY.

"It is done by signals, devised after a system of the Indian's own
invention, and communicated in various ways.

"Wonderful as the statement may appear, the signaling on a bright
day, when the sun is in the proper direction, is done with a piece of
looking-glass held in the hollow of the hand. The reflection of the
sun's rays thrown on the ranks communicates in some mysterious way the
wishes of the chief. Once standing on a little knoll overlooking the
valley of the South Platte, I witnessed almost at my feet a drill of
about one hundred warriors by a Sioux chief, who sat on his horse on a
knoll opposite me, and about two hundred yards from his command in the
plain below. For more than half an hour he commanded a drill, which
for variety and promptness of action could not be equaled by any
civilized cavalry of the world. All I could see was an occasional
movement of the right arm. He himself afterwards told me that he used
a looking-glass." (Dodge's _Plains of the Great West_, _loc. cit._,
pp. 307, 308.)

FRIENDSHIP.

If two Indians [of the plains] are approaching one another on
horseback, and they may, for instance, be one mile apart, or as far as
they can see each other. At that safe distance one wants to indicate
to