152 ROCHESTER ACADEMY OF SCIENCE. [March 9, 
the northern part of Yucatan and Southern Mexico, from Vera Cruz to 
Jorullo. Two of the party, Prof. Heilprin and the speaker, ascended 
and took barometric measurements of Orizaba, Popocatepetl, Ixtac- 
cibuatl, Nevada de Toluca and Jorullo. The heights of the first four 
mountains as finally determined, are as follows : 
Orizaba 18205 ft. alt. - 
Popocatepetl, 1/5 2S mes 
Ixtaccihuat] 16960 ** 
Nevada de Toluca, 14954 ‘‘ 
Large collections in Zoology, Botany, Geology and Mineralogy 
were made. 
The lecture was illustrated by blackboard diagrams, photographs 
and numerous specimens. 
MaRCH g, 1891. 
STATED MEETING. 
The President, Pror. H. L. FArRCHILD, in the chair. 
Sixty persons present. 
The Council report recommended : 
(1.) The payment of certain bills. 
(2.) The election of the following candidates as resident members: 
Mr. Geo. H. ASHLEY, 
Mr. EDMOND N. GUERET. 
(3.) That the Academy extend an invitation to the American 
Association for the Advancement of Science to hold its Annual 
Meeting of 1892 in the City of Rochester, and that the other institu- 
tions of city, and the city government, be asked to join in the invitation. 
The bills were ordered paid, the candidates elected by formal 
ballot, and the resolution unanimously adopted. 
It was moved and voted that the Council be empowered to carry 
the resolution of invitation into effect, in the name of the Society. 
Under deferred business the following change in the By-Laws, 
proposed Nov. roth, 1890, was considered and adopted unanimously. 
Resolved, that Section 5, Chapter XIII, of the By-Laws be changed to read as follows: 
The Council shall have power to remit the fees or dues of individual members or 
fellows, provided that such remission shall not be anticipatory in its effect. 
