ADMINISTRATIVE REPORT LXXXI 



ot" whicli a large part is sociologic. In addition, he pre])ared 

 during the year a memoir on the " Siouan Tribes of the East," 

 wliich has been sent to pi'ess as one of the series of bulletins 

 of the Bureau. In this paper the relations and movements of 

 the tribes recorded by early explorers and settlers of eastern 

 United States are analyzed and, after comparative study for 

 the jnirpose of combining the various consistent records and 

 eliminating the uncertainties due to vague geographic and eth- 

 nographic records, grouped as a consistent body of informa- 

 tion relating- to the aboriginal landholders of cisappalachian 

 United States. The memoir represents much patient research 

 among early maps and throughout the earliest literature of the 

 United States. It is enriched by synonymv of the various 

 tribes of the district, and incidentally considerable information 

 relating to the organization and social institutions of these 

 tribes is incorporated. 



PICTOGRAPHY AND SIGX ILiAKGlTAGE 



The earlier part of the year was spent by Colonel Garrick 

 Mallery in revising the proofs of his monograph on "Picture- 

 writing of the American Indians," whicli lias since been pub- 

 lished in the Tenth Annual Report of the Bureau. Some 

 years were devoted by Colonel Mallerv to the collection of 

 information on this subject and the subject of sign language 

 and gesture speech among the aborigines, and this monograph 

 represents the product of labors in the interesting line of 

 research to which it a})pertains. By reason of the invasion of 

 white men, many of the primitive customs of the Indians have 

 been modified and some have been lost; and in few directions 

 is the modification more complete than in that of inscribing 

 records on rocks and other surfaces; and it has been the pur- 

 pose to render this work as complete an exposition of the crude 

 graphic art of the American Indian as it is possible to make at 

 this time. It is believed that the work will be found practi- 

 cally exhaustive and a standai'd source of information. During 

 the remaining portion of the year Colonel Mallery has been 

 engaged in the preparation of a companion monograph on the 

 sign language of the American Indians. The material for this 



15 BTH VI 



