390 COLUMBIAN HISTORICAL EXPOSITION AT MADRID. 



KNIVES OF PECULIAR FORM, DAGGERS, DRILLS, AND ECCENTRIC 

 PIERCING OR CUTTING IMPLEMENTS. 



The exquisite specimens exhibited by Mexico (fig. 18, Mexican cases 

 G and L, and National Museum case 13) are mostly made of obsidian, 



Fig. 18. 



KNIVES AND ECCENTRIC CHIPPED FORMS. 



United States and Mexico. 



