PROCEEDINGS. 
551 
347th Meeting. February 1, 1890 
Vice-President Gilbert in the chair. 
Forty members present. 
Mr. C. Hart Merriam read a paper on The General Results 
of a Biological Survey of the San Francisco Mountain Region of 
Arizona. 
Published in U. S. Department of Agriculture, Division of 
Ornithology and Mammalogy, North American Fauna, No. 8, 
pp. 1-186, pi. 18, maps 5. 
348th Meeting. February 15, 1890. 
President Dutton in the chair. 
Seventy-five members and guests present. 
The President announced the election of Joseph Stanley- 
Brown and Lincoln Grant Eakins as members of the Society. 
Mr. Gardiner G. Hubbard gave An Account of Stanley’s Dis¬ 
coveries in Africa. 
Not published. 
Mr. C. D. Walcott read a paper entitled A Study in Structural 
Geology. 
Published under the title “ Study of a Line of Displacement 
in the Grand Canon of the Colorado in Northern Arizona,” Bul¬ 
letin of the Geological Society of America, vol. 1, pp. 48-64, 8vo, 
Washington, 1890. 
349th Meeting. March 1, 1890. 
President Dutton in the chair. 
Forty members present. 
Mr. G. Brown Goode made a communication on The Origin 
of our National Scientific Institutions. 
Published in Papers of the American Historical Association, 
8vo, New York, 1890. 
