The other side of the hall contains the collections of Dr. E. 
Hassler from the Gran Chaco tribes. The most northern of the 
group inhabit Brazil and Bolivia, while the more southern extend 
into the Argentine Republic. The principal tribes representing 
are the Tobas, Lenguas, Chamacoccos, Guaranis, Cuximosso, 
Panas, Paitas and Omiris. The collection is especially interesting 
as representing tribes which have had but little contact with civil- 
ization. The collection contains much beautiful feather work, 
and a number of remarkable stone weapons. 
HALLS 16 AND 17. 
These halls are devoted to the Hopi collections, nearly all of 
which were presented by Mr. Stanley McCormick. Owing to con- 
templated changes to be made in the halls it is not possible to 
give here the location of individual cases. 
Hall 17. — Devoted to an exposition of the archeology of the 
Hopi, and to the domestic side of their modern life. 
Hall 18. — Devoted to Hopi religion and ceremoniology. 
HALL I 8. 
Edward E. Ayer Hall. 
TRIBES OF THE GREAT PLAINS. 
Extensive changes are being carried on in this hall so that it 
is not possible to give the locations or groupings of the exhibits. 
The hall is devoted to the so-called tribes of the Great I'lains, in- 
cluding the Athabascon, Algonkin, Sioux, etc. The hall contains 
only a small part of the gift of Mr. E. E, Ayer. 
HALL 0. 
MUSICAL INSTRUriENTS. 
The collection in this hall consists of musical instruments 
from Java and India, also a series of reproductions of antique 
instruments. 
Case L — Contains several sarons of various sizes. The saron 
