x PHILOSOPHICAL SOCIETY OF WASHINGTON. 
4, Elections of officers are to be held as follows: 
In each case nominations shall be made by means of an informal 
ballot, the result of which shall be announced by the Secretary; 
after which the first formal ballot shall be taken. 
In the ballot for Vice-Presidents, Secretaries, and Members of the 
General Committee, each voter shall write on one ballot as many 
names as there are officers to be elected, viz., four on the first ballot 
for Vice-Presidents, two on the first for Secretaries, and nine on the 
first for Members of the General Committee; and on each subse- 
quent ballot as many names as there are persons yet to be elected ; 
and those persons who receive a majority of the votes cast shall be 
declared elected. 
If in any case the informal ballot result in giving a majority for 
any one, it may be declared formal by a majority vote. 
5. The Stated Meetings, with the exception of the annual meet- 
ing, shall be devoted to the consideration and discussion of scientific 
subjects. 
The Stated Meeting next preceding the Annual Meeting shall 
be set apart for the delivery of the President’s Annual Address. 
6. Sections representing special branches of science may be 
formed by the General Committee upon the written recommenda- 
tion of twenty members of the Society.* 
7. Persons interested in science, who are not residents of the Dis- 
trict of Columbia, may be present at any meeting of the Society, — 
except the annual meeting, upon invitation of a member. 
8. Similar invitations to residents of the Distriet of Columbia, 
not members of the Society, must be submitted through one of the 
Secretaries to the General Committee for approval. 
9. Invitations to attend during three months the meetings of the 
Society and participate in the discussion of papers, may, by a vote 
of nine members of the General Committee, be issued to persons 
nominated by two members. 
10. Communications intended for publication under the auspices 
* Under this rule the Mathematical Section was organized March 29, 1883. 
Its rules and proceedings follow the Bulletin of the General Meeting. 
