LIST OF ILLUSTRATIONS. 



Pnge 



I. Purple-Shells and Trumpet-Shells . ... Frontispiece 



II. Map showing the Distribution of the Shell-Purple Industry ... 2 



III. Map showing the Distribution of Shell-Trumpets ... ... 31 



IV. Aztec Picture Writings ... ... ... . ... facing 52 



V. Maya Sculpture and Picture Writings ... ., 58 



VI. Inca'rnation.s of Indian and Japanese Gods ... . ., 62 



VII. Map showing the Distribution of the use of Pearls and Pearl - 



Shells 71 



VIII. Map showing the recorded range of CyprcEa mofteta and annulus 124 



IX. Map showing the Distribution of the use of Cowries ... 125 



X. Cowries used for Currency, etc. . ... ... ... ... 156 



XI. Strings of Cowries used for Symbolic Messages, etc. . ... 162 



XII. Chinese Hieroglyphs for Cowry and Tortoise ... ... ... 180 



XIII. Ovtila ( Calpurnus ) verrucosa, L ... ... ... 191 



