Sign language, [60] et seq.

Signs, examples of, [60], [61], [62], [63], [64].

Sinking into ground, [83].

Siouan, [91], [97], [155].

Sioux, [25], [44], [49], [60], [66], [67], [69], [138] et seq., [150], [151], [155] et seq., [224].

Sipapu, [171].

Sisseton (Sioux), [155].

Six Nations, [119].

Skidgate, [223].