RECORDS OF MEETINGS 387 



SECTIOX OF GEOLOGY AND MTXEKALOGY 



2 November, 1914 



Section met at 8:15 p. m., Vice-President C. P. Berkey presiding. 

 No business was transacted, and the evening was devoted to the fol- 

 lowing lecture : 



Reginald A. Daly, Puom.inrs of Yolcaxtc Actiox. 



Summary of Paper 



Professor Daly said in abstract : To understand tlie constitution of the 

 earth it is necessary to know the mechanism of its volcanoes. Progress 

 in completing that knowledge depends on the making of rigorous dis- 

 tinction between the essential and the subsidiary questions regarding 

 volcanic activity. Among the essential questions are : WTiat is the first 

 step in volcanism ? How is a volcanic vent opened ? How is its activity 

 continued? Why is that activity intermittent? Why are some vents 

 arranged in lines while others are grouped in clusters? "What are the 

 causes of volcanic explosions, of lava outflow, and of variations in the 

 character of lavas? The measure of contemporary success in solving 

 these problems was considered. 



After the lecture a collation was served in the Eskimo Hall. A re- 

 ception to Professor Daly followed, and the Section then adjourned. 



A. B. Pacini, 



Secretary. 

 SECTION OF BIOLOGY 



9 November, 1914 



Section met at 8 :15 p. m.. Professor Eaymond C. Oslnirn presiding. 

 The minutes of the last meeting of the Section were read and approved. 



The following nomination for the year 1915 was made and approved 

 for transmission to the Council : 



For A^ice-President of the Academy and Chairman of the Section: 

 Professor Eaymond C. Osburn. 



Dr. W. K. Gregorv was elected Secretarv for the vear 1915. 



The following programme was then offered : 



George T. Stevens, Some Elementary Forms an^d Phenomena in 



THE Evolution of Visual Perception. 



W. K. Gregory, Observations on the Tndrisin.i-: ano (^ther 



Lemurs. 



