---- Horseman at a distance, galloping, passing and repassing, and
crossing each other--_enemy comes_. But for notice of herd of buffalo,
they gallop back and forward abreast--do not cross each other. (H.M.
Brackenridge's _Views of Louisiana_. _Pittsburgh_, 1814, p. 250.)
---- Riding rapidly round in a circle, "Danger! Get together as
quickly as possible." (Richard Irving Dodge, lieutenant-colonel United
States Army, _The Plains of the Great West_. _New York_, 1877, p.
368.)
---- Point the right index in the direction of the danger, and then
throw the arm over the front of the body diagonally, so that the
hand rests near the left shoulder, back outward. If the person to be
notified of the danger should be in the rear precede the above signal
with that for "_Attention_." This signal can also be made with a
blanket, properly grasped so as to form a long narrow roll. Perhaps
this signal would more properly belong under "_Caution_," as it would
be used to denote the presence of a dangerous beast or snake, and not
that of a human enemy. (_Dakota_ I.)
[Illustration: Fig. 337.--Signal for "buffalo discovered."]
[Illustration: Fig. 338.--Signal of discovery or alarm.]
---- Passing and repassing one another, either on foot or
mounted, is used as a war-signal; which is expressed in the
Hidatsa--makimak[)a]'da--halidie. (_Mandan and Hidatsa_ I.)