FEB. 4, 1923 PROCEEDINGS: PHILOSOPHICAL SOCIETY 43 
The occupancy of the territory of our Middle West between the great 
Lakes and the Ohio by Siouan tribes seems therefore to rest on grounds 
almost historical. With the strong indications now at hand there 
seems reason to think that a close comparative study of the Siouan 
dialects would enable us to reconstruct the general outlines of their 
ancient geographical positions with considerable accuracy. If present 
indications are not deceptive, when that is done we shall find that they 
fell into four major linguistic groups; a northeastern, consisting of 
the ancestors of the later Siouan tribes of Virginia, the Hidatsa, 
Dakota, Biloxi, and Ofo; a southeastern, including most of the later 
Siouan peoples of the two Carolinas; a southwestern composed of the 
five tribes of Dorsey’s Dhegiha group; and a northwestern, Dorsey’s 
Tciwere.”! 
Admittedly there is much of speculation in all this, but I have 
considered that the facts are of sufficient importance to both the 
ethnologist and the archaeologist of the Ohio region to present them 
in a usable form. 
PROCEEDINGS OF THE ACADEMY AND AFFILIATED 
SOCIETIES 
PHILOSOPHICAL SOCIETY OF WASHINGTON 
870TH MEETING 
The 870th meeting was held in the Cosmos Club auditorium, Saturday, 
October 21, 1922. It was called to order at 8:15 p.m. by President 
Crittenden. The attendance was 62. 
Mr. Witu1amM Bowlin made a report on The meetings of the International 
Geodetic and Geophysical Union and of the International Astronomical Union. 
It was discussed by Messrs. PawLine and Woopwarb. 
Author’s Abstract: The speaker prefaced his remarks by outlining the 
status of international scientific cooperative efforts before the outbreak of 
the war. Some years ago it was felt by scientists in various countries that it 
was necessary to cooperate to avoid duplication of effort and in order that 
each should know what methods and instruments were being used by others. 
Such desire on the part of scientists led to the formation of a number of asso- 
ciations, notably those of Geodesy, Seismology, Astronomy, Meteorology, 
and Geology. 
The world war greatly interfered with international scientific cooperation 
and many of the associations were able to maintain only a nominal existence, 
through the efforts of the neutral nations of Europe. 
Shortly after the close of the war there was held a meeting, in July, 1919, 
at Brussels, which provided for the creation of an International Research 
Council, with a number of branches called Unions, which, in turn, were 
subdivided into Committees or Sections. Two of the Unions created at 
21 T have purposely left the Mandans unplaced, but I do not believe that they will be 
found to occupy a position apart from all of the other groups. 
