Another:  Wave the hand from the mouth, extending the thumb from the index and closing the other three fingers. (Burton.)

Gesticulate vertically downward and in front of the body with the extended forefinger (right hand usually), the remaining fingers and thumb closed, their nails down. (Creel; Arapaho I.)

Right hand elevated to the level and in front of the shoulder, two first fingers somewhat extended, thumb resting against the middle finger; sudden motion in a curve forward and downward. (Cheyenne II.) It has been suggested that the correspondence between this gesture and the one given by the same gesturer for sitting (made by holding the right hand to one side, fingers and thumb drooping, and striking downward to the ground or object to be sat upon) seemingly indicates that the origin of the former is in connection with the idea of “resting,” or “settling a question.”  It is however at least equally probable that the forward and downward curve is an abbreviation of the sign for truth, true, a typical description of which follows given by (Dakota I).  The sign for true can often be interchanged with that for yes, in the same manner as the several words.

The index of the horizontal hand (M), other fingers closed, is carried straight outward from the mouth.  This is also the sign for truth. (Dakota I.) “But one tongue.”

Extend the right index, the thumb against it, nearly close the other fingers, and holding it about a foot in front of the right breast, bend the hand from the wrist downward until the end of the index has passed about six inches through an arc.  Some at the same time move the hand forward a little. (Dakota IV.) “A nod; the hand representing the head and the index the nose.”

Hold the naturally closed hand before the right side of the breast, or shoulder, leaving the index and thumb extended, then throw the hand downward, bring the index against the inner side of the thumb. (Dakota VI, VII, VIII.) Fig. 280.  Compare also Fig. 61, p. 286, supra, Quintilian’s sign for approbation.

[Illustration:  Fig. 280.]

The right hand, with the forefinger only extended and pointing forward, is held before and near the chest.  It is then moved forward one or two feet, usually with a slight curve downward. (Mandan and Hidatsa I.)

Bend the right arm, pointing toward the chest with the index finger; unbend, throwing the hand up and forward. (Omaha I.)

Another:  Close the three fingers, close the thumb over them, extend forefinger, and then shake forward and down.  This is more emphatic than the preceding, and signifies, Yes, I know. (Omaha I.)

The right arm is raised to head with the index finger in type-position (I1), modified by being more opened.  From aside the head the hands sweep in a curve to the right ear as of something entering or hearing something; the finger is then more open and carried direct to the ground as something emphatic or direct. (Oto and Missouri I.) “’I hear,’ emphatically symbolized.”  It is doubted if this sign is more than an expression of understanding which may or may not imply positive assent.  It would not probably be used as a direct affirmative, for instance, in response to a question.