OF THE BUREAU OF ETHNOLOGY. XXV 
used in printing Eskimo texts, and one on page 97 of Veni- 
aminoft’s Guide Road. 5 
Perforated Stones from California, by Henry W. Henshaw; 
1887, pp. 34, Figs. 1-16. 
The Use of Gold and other Metals among the Ancient Inhab- 
itants of Chiriqui, Isthmus of Darien, by William H. Holmes; 
1887, pp. 27, Figs. 1-22. 
Work in Mound Exploration of the Bureau of Ethnology, 
by Cyrus Thomas; 1887, pp. 15, Fig. 1. 
Bibliography of the Siouan Languages, by James C. Pil- 
ling; 1887, pp. v-+1-87. 
FIELD WORK. 
The field work of the year divides into (1) mound explora- 
tions and (2) general field studies, the latter being chiefly di- 
rected to archeology, linguistics, and pictography. 
MOUND EXPLORATIONS. 
WORK OF MR. CYRUS THOMAS. 
The work of exploring the mounds of the eastern United 
States was, as in former years, under the superintendence of 
Mr. Cyrus Thomas. During the year his assistants were Messrs. 
James D. Middleton, Gerard Fowke and Henry L. Reynolds. 
Much of his attention and that of his assistants was directed 
to the preparation for publication of his reports on the work 
of the mound division during previous years. 
As the work of unfolding and systematizing the field notes, 
examining the collections and preparing the plats and illustra- 
trations proceeded, it was found that there were some omissions 
in the original examinations which left the details of certain 
sections incomplete, and it became important to obtain as far 
as possible the missing information. The most serious hiatus 
was filled by an examination of the lake border of the United 
States from Detroit westward to the head of Lake Superior, for 
the purpose of ascertaining whether the historic Indian local- 
ities along that line were marked by mounds or other ancient 
works. 
