86 MEMOIRS OF THE CARNEGIE MUSEUM 
In Salvador no single object of jade has to my knowledge been found. In 
Guatemala and Honduras jade objects again appear, but as yet not very numerous 
finds have been made. Whether the jade for these objects was found in these states 
or whether it was obtained from the rich veins of southern Mexico has yet to be 
found out by research. 
No indication of the source of the ancient supply of the jades of Nicoya has as 
yet been discovered. Very likely, however, a mine may be located some day in 
the neighborhood of Las Guacas, as not only the great majority of all jade artefacts 
have been found here, but also worked blocks of the crude stone, proving that celt- 
Fic. 71. Block of jadeite (+). (Nat. Fic. 72. Same Block of jadeite seen from the back (3). 
Mus. of Costa Rica, No. 9096. ) ° 
shaped amulets were probably manufactured at this very spot. The largest speci- 
men of a similar core of pure, translucent jadeite encountered is the one represented 
by Text Figs., 71, 72, which belongs to the Velasco collection of the National 
Museum of Costa Rica. Another, a large water-worn pebble of pure translucent 
jadeite from Las Guaeas is illustrated by Pl. XXXII, Figs. 8 and 4, and a worked 
block of bowenite by Pl. XXXII, Figs. 1 and 2. 
Ornamental objects of jade were almost exclusively manufactured in Nicoya. 
This precious mineral was hardly ever used for tools. Only a couple of small celts 
of jade, which have served as tools, are found in the Velasco collections of the 
Carnegie Museum. 
A mineralogical study of jade objects of the United States National Museum of 
Washington has been published by F. W. Clarke and G. P. Merrill,” and this paper 
includes six specimens from Las Guacas and a few from other places of Nicoya. 
In the monumental and elaborate work of Heber R. Bishop: “ Investigations 
and Studies in Jade,” color reproductions are given of a few objects of jade, mostly 
celts, from Guatemala and New Mexico. 
In the present work, on Pls. XLIII, XLIV, XLV, are brought together and 
23. W. Clarke and G. P. Merrill. ‘‘On Nephrite and Jadeite.”’ Proc. of the U. S. Nat. Mus., 1888, pp. 115-130. 
