The Society met in the Society Hall of the Cosmos Club, President Hubbard in the chair. Owing to the absence from the city of the Secretaries, Mr. O. H. Tittmann was requested to act as Secretary of the meeting. The minutes of the first and fourteenth meetings were read and approved. The report of the Secretaries was read, in their absence, by the temporary Secretary, and was approved. The Treasurer's report, showing a balance on hand of $626.70, was read and approved, as was also that of the auditing committee. The President announced that vacancies caused by the resignation of two of the managers, Messrs. W. D. Johnson and Henry Mitchell, had been filled by the Board on the 15th of November, by the election of Messrs. O. H. Tittmann and C. A. Kenaston; and that a vacancy caused by the resignation of Vice-President John R. Bartlett, had been filled by the election of Lieut. George L. Dyer, on November 30th. The Society then proceeded to the election of officers, with following result: _President_--GARDINER G. HUBBARD. _Vice-Presidents_--HERBERT G. OGDEN, [land]; GEORGE L. DYER, [sea]; A. W. GREELY, [air]; C. HART MERRIAM, [life]; A. H. THOMPSON, [art]. _Treasurer_--CHARLES J. BELL. _Recording Secretary_--HENRY GANNETT. _Corresponding Secretary_--GEORGE KENNAN. _Managers_--CLEVELAND ABBE, MARCUS BAKER, ROGERS BIRNIE, JR., G. BROWNE GOODE, W. B. POWELL, J. C. WELLING, C. A. KENASTON, O. H. TITTMANN. _January 11, 1889, Sixteenth Meeting_. The paper of the evening was entitled, "The Great Plains of Canada," and was presented by Professor C. A. Kenaston, of Howard University. _January 25, 1889, Seventeenth Meeting_. The paper of the evening was entitled, "Irrigation in California," by Mr. William Hammond Hall, State Engineer of California. To be published in the "National Geographic Magazine," Vol. I, No. 4. _February 8, 1889, Eighteenth Meeting_. The following papers were read by Prof. W. M. Davis, of Harvard University: "Topographic Models," and "Certain Peculiarities of the Rivers of Pennsylvania." Published in the "National Geographic Magazine," Vol. I, No. 3. _February 22, 1889, Nineteenth Meeting_. The paper of the evening was entitled, "Round about Asheville, N. C.," by Mr. Bailey Willis. The paper was illustrated by charcoal sketches and lantern slides. Discussion followed, which was participated in by Messrs. Baker, Merriam and McGee. To be published in the "National Geographic Magazine," Vol. I, No. 4. _March 8, 1889, Twentieth Meeting_. The following amendments to the By-Laws were adopted. [For Article VI substitute the following]: ARTICLE VI. MEETINGS. "Regular meetings of the Society shall be held on alternate Fridays, from November until May, and excepting the annual meeting, they shall be devoted to communications. The Board of Managers shall, however, have power to postpone or omit meetings, when deemed desirable. Special meetings may be called by the President.