252 



Profs. P. F. Frankland and Marshall Ward. 



N 8 



8 s ~£ § 

 © s ~ g •! 



C op 



M 0Q h-t 



to 

 f-t 



,3 £ »*> 



s ° ^ s 



1 &' S 1 W 



'■Ml*** 



s^- 2 S * S Sr - 



^3 O 



c 



o 

 E3 



00 



i e 1 © 





Pq ^ o* 









O » cs 







> § 

 S * 



60 | V. 



EH W, 



1 So 







g 1 







ill 



Co 65 

 ■8 ,2 



$ -to o 







Pqpq 



*5 

 s 



1 3 



.60 



r 



In 



qJ ft.* 



,S1 



>3 



