218 



Profs. Percy Frankland and Marshall Ward. 



a> U 



IS.8.1 



B M ^ 



I a 



■a 



i— i 



ft 



o 



CO 

 — 



S 



00 

 CM 





 1-5 



o 



o 



CO 



S3 



T3 



(S3 

 CO 



o 



8 



CO 



co 

 c3 



o 



02 

 O 



Eh 



o - 



+ 5 



© d 

 d © 

 CO CO 



O . O O J> i> o 



© 

 S3 



sis lis*- . 



rH O O 



CM <N 



CO OB 



O »o 



E HH 



CO CO ' < p3'- | EcO CO H* - ^ 



T?^COCO-<?iOCOCO 



vflOOOi>00HN 



aooeaociacoocics 



M „ l-H 



nWWWHHHH 



