CONTENTS. 



PAGE 



Scientific Proceedings (45th-49th meetings) : 



Communications of the forty fifth meeting, October 18, 191 1 . . 1 



Communications of the forty sixth meeting, December 20, 191 1 . . 17 



Communications of the forth seventh meeting, February 21, 1912 . 35 



Communications of the forty eighth meeting, April 17, 1912 . . 71 



Communications of the forty ninth meeting, May 15, 1912 . . 97 

 Recapitulation of the names of the authors and of the titles of the 



communications 125 



Executive Proceedings (45-49111 meetings) 133 



Register of Names and Addresses of the Members .... 137 



List of Officers 145 



Classified List of Members 147 



Index of the Scientific Proceedings 151 



