§ 72. The president. The president of the Seneca nation shall preside
over the deliberations of the council and shall have only a casting vote
therein. He shall from time to time give to the council information of
the state of the nation, and recommend such measures as he shall judge
necessary and expedient; and shall take care that the laws applicable to
the nation be faithfully executed. He shall have power to convene the
council in extra session as often as, in his judgment, the interests of
the nation require, and to fill all vacancies that may occur therein
until such vacancy be filled by election. In the absence of the
president, the council shall choose from among their own number a
presiding officer, pro tempore.