PROCEEDINGS 



OF THE 



AMERICAN ACADEMY 



OF 



ARTS AND SCIENCES. 



NEW SERIES. 

 Vol. XVllI. 



WHOLE SERIES. 

 Vol. XXVL 



from may, 1890, to may, 1891. 



SELECTED FROM THE RECORDS. 



BOSTON: 



UNIVERSITY PRESS: JOHN WILSON AND SON. 



1891. 



