G. E. Briggs, F. Kidd, and C. West 



219 



■a so is 



».2'° S 



■§!o A 



ogOg 



£ a is o >o 



c5 be ^j 

 > g "* 



as 



^2 



bo 2 



<-i 



3 B 



M tS W "* 



d <!'-£ 

 o ^ 



d -a a ~ 



2 M 



d 



IS»a 



^■5 



53 _?2 "= -3 



*jj *^<1 PS O 



"53 



"53 



O 



p-i <M 



?? ? i 



© © lO lO 



T3= -d 



otl 

 H ° 



— J2 



2^ H 



-d j2 



iii in 



as on -C 



CO 



a 



5 M 



ft W 



'■S sfi 



3 c8 



53 



I 1 



H 



^2 S 





as Li 



- 



CD 



