THE STONE AGE IN NORTH AMERICA [Illustration: FIG. 223. (_S. 1–1._) _Two grooved effigies and two celts, from the Bahama Islands, West Indies. Reproduced in natural colors. B. W. Arnold’s collection, Albany, New York._ ] THE STONE AGE IN NORTH AMERICA AN ARCHÆOLOGICAL ENCYCLOPEDIA OF THE IMPLEMENTS, ORNAMENTS, WEAPONS, UTENSILS, ETC., OF THE PREHISTORIC TRIBES OF NORTH AMERICA, WITH MORE THAN THREE HUNDRED FULL-PAGE PLATES AND FOUR HUNDRED FIGURES ILLUSTRATING OVER FOUR THOUSAND DIFFERENT OBJECTS BY WARREN K. MOOREHEAD, A.M. CURATOR OF THE DEPARTMENT OF AMERICAN ARCHÆOLOGY, PHILLIPS ACADEMY, MEMBER OF THE BOARD OF INDIAN COMMISSIONERS, ETC. IN TWO VOLUMES VOL. II [Illustration: [Logo]] BOSTON AND NEW YORK HOUGHTON MIFFLIN COMPANY =The Riverside Press Cambridge= 1910 COPYRIGHT, 1910, BY WARREN K. MOOREHEAD ALL RIGHTS RESERVED _Published December 1910_ CONTENTS XXV. GROUND STONE 1 Effigies in stone and wood—bird-stones 1 Animal and human effigies 20 XXVI. GROUND STONE 29 Stone pipes 29 The classification of pipes 32 XXVII. GROUND STONE 95 Mortars and pestles 95 XXVIII. OBJECTS OF SHELL 117 XXIX. OBJECTS OF BONE 134 Mandan bone implements 149