378 COLUMBIAN HISTORICAL, EXPOSITION AT MADRID. 



Fig. 8, presenting designs from (a) the Codex Porfirio Diaz (Mexico), 

 (c) and (d) the Mexican manuscript lately discovered in Florence by 

 Mrs. Zelia Nuttall, shows that these forms were sometimes similarly 

 mounted as sacrificial knives by the ancient Mexicans, or set at right 

 angles iu curved handles (d) as the iron blade is mounted in the Sioux 

 war club (e). The figure (&) from the Codex Cortesianus (Yucatan), 

 the ancient Maya manuscript supposed to have been brought from Cen 

 tral America to Spain by Cortez shows another interesting method of 

 mounting practiced by the Central Americans. 



Fig. 10. 



CACHE OF 116 ARGILLITE BLADES. 

 Probably buried by an Indian blade worker to dig Tip for final shaping to order on sale or barter. 



Found accompanied by a hammer stone 1 foot beneath the surface at Ridges Island, Delaware River, June, 1891. 



Well-specialized blades of this general character, made of various 

 grades of flint, jasper, slate, quartzite, and argillite, vary greatly in 

 size, from 1 inch to 14 in length, and in shape run through the forms 

 numbered 7, 31, 43, 50, 18 (in fig. 5), and many other leaf-shaped and 

 almost triangular patterns (see fig. 9). With them may be classed the 

 specimens unearthed in hoards or caches, as, for example, the largest 

 known series, of about 8,185 specimens, found and partially removed by 

 Squier and Davis, and finally completely exhumed by Mr. W. K, Moore- 

 head in 1891 from Mound Ko. 2, in the Hopewell group of mounds in 

 Paint Creek Valley, Ohio. Plate II. 



Fig. 10 shows the cache of 117 argillite blades, exhibited in the Uni 

 versity of Pennsylvania case, found by me resting upon a flat pebble 

 hammer 7 inches below the surface, and arranged in layers on thsir sides. 



