PROCEEDINGS. XXIII 



Dr. C. Hart Merriam delivered an address on the GENERAL 

 RESULTS OF A BIOLOGICAL SURVEY OF THE SAN FRAN 

 CISCO MOUNTAIN REGIONS. Discussed by Messrs. Walcott, 

 Diller, YanDeman, and Ward. 



ONE HUNDRED AND FIFTY-SECOND MEETING. 

 December 28, 1889. 



Yice-President Merriam in the chair, and nineteen members 

 present. 



Dr. A. F. A. King read a paper on THE FLIGHT OF YOUNG 

 BIRDS. Discussed by Messrs. VanDeman, Merriam, Simpson, 

 and Wood. 



Mr. M. B. Waite spoke ON A METHOD BY WHICH THE 

 SEEDS OF PILEA PUMILA ARE EJECTED. 



Dr. C. Hart Merriam described A NEW RED-BACKED 

 MOUSE FROM COLORADO. 



Mr. Th. Holm presented a paper on the GENERIC CHARAC 

 TERS OF THE GRAMMINE^ AND CYPERACE^E. Discussed by 

 Messrs. Waite, Merriam, Howard, and Seaman. 



ONE HUNDRED AND FIFTY-THIRD MEETING, 

 January 10, 1890. 



(Tenth Annual Meeting). 



The President occupied the chair, and nineteen members 

 were present. 



The annual reports of the Secretary and Treasurer were 

 read and accepted. 



The following board of officers was elected for the ensuing 

 year : 



President. Lester F. Ward. 



Vice- Presidents. Prof. C. V. Riley, Dr. C. Hart Merriam, 

 Richard Rathbun, and Dr. Frank Baker. 



