684 



PROCEEDINGS OF THE AMERICAN ACADEMY. 







bJD 

 52 3 



a ^ 



03 



N 





^ o 

 F =2 



-<Ph 



t: ■■■«■ 



0) 



;3 



03 

 o 



(-1 

 o 



■a s, 



CO f-H 



OH 



ft, 



O 



r3 

 H 



CDOO OOOCO lO t^ 



^ (N 



OO C2 O ^ C<) (M 

 —I —< C^ IM (M (M 



CIO 

 (M CO 



(M 



O 



CO 



