PROCEEDINGS 



OF THE 



AMERICAN ACADEMY 



OF 



ARTS AND SCIENCES. 



NEW SERIES. 

 Vol. XII. 



WHOLE SERIES. 

 Vol. XX. 



FROM MAY, 1884, TO MAY, 1885. 

 SELECTED FROM THE RECORDS. 



BOSTON: 



UNIVERSITY PRESS: JOHN WILSON AND SON. 



1885. 



