CONTENTS. 



PAGE 



Scientific Proceedings (77th-84th meetings): 



Communications of the seventy-seventh meeting, October 18, 1916 . . 1 



Communications of the seventy-eighth meeting, November 15, 1916 . . 25 



Communications of the seventy-ninth meeting, December 20, 1916 . . 51 



Communications of the eightieth meeting, January 17, 1917 .... 69 



Communications of the eighty-first meeting, February 21, 1917 ... 87 



Communications of the eighty-second meeting, March 21, 1917 . . . 109 



Communications of the eighty-third meeting, April 18, 1917 . . . . 131 



Communications of the eighty-fourth meeting, May 16, 1917 . . . 149 

 Recapitulation of the Names of the Authors and of the Titles of the 



Communications 177 



Executive Proceedings (77th-84th meetings) 188 



Register of Names and Addresses of the Members 191 



List of Officers 199 



Classified List of Members 201 



Index of the Scientific Proceedings 205 



iii 



