The publication of this study of the sun dance has been long delayed in the hope that circumstances would permit a more intensive study of the ceremony among the Canadian divisions. But the time for making such a study has really passed, since those natives who had the knowledge essential to an accurate exposition of the sun dance are now dead. It seems advisable, therefore, to publish the data as they stand.

The writer saw the Piegan ceremony twice, so that this study is based both upon objective observation and discussion with the native authorities on the subject. Later, Mr. Duvall checked over the data and conclusions with these and other informants. A large series of photographs was taken, but the important phases of the ceremony are so well shown in the published works of McClintock and Curtis that a repetition here is unnecessary.

Clark Wissler.

May, 1918.

CONTENTS.

ILLUSTRATIONS.

Text Figures.

The Sun Dance.