clxvi 



INTRODUCTION 



oooooo lo lOOO 



c^ Ci Oi d Gi Gi [Ci \ a a o^ 



OOCOCOCOOOOOCOGO lOOQOCO 



t^ t^ t^ t^ t^ 1~- 



Ico^ooo |o lo |o 



I lO >0 vO lO I lO lit! I 



■'^ Tr( T^ -^ -^ I T^ -^ I 



I CO CO CO 00 



(M C^ C-1 (M (M 



»0 VO to 



I CO I CO 



I O O Cs C5 



I 00 00 CO CO 



I t^ t^ t^ !>• 



I CO O 50 «o 



I lO I lO VC 



I '^ I Ti< Tl< 



CO CO 1 CO CO 



1 (M CM Cq CN 



I r-l I ,-1 ,-1 



OS C5 



I CO 



o o o o o 



1 Gi Oi a Oi 



I 00 CO CO CO 



I r~ t^ r^ r^ 



j CO CO o <:o 



i lO O LC to 



"^ "^ "r^JH -^ ■^ 



CO CO CO CO CO 



(M (M (M Ol (M 



I 03 I 05 



I O I o o 

 I 00 ^ OO CO 



CO CO 



O lO 



CD CD 



1 'O 



CO CO CO I CO 



<N (M I (M iM Cq 



CD CD 

 IC lO 



CO CO 



CD CO 



to lO 



I ^ 



CO CO 



I oooooooo 



a G> <7i Gi Oi Oi 



CO 00 00 00 00 1 



I t^ 1:^ t^ 



I CO CD CD CD CD 



to to lO to to to I 



^ -^ T^ "<;^ -"^ T^H 



I CO CO CO CO I 



I (M (M (M (M C5 



Gi 



G> 



1 Gi 



OS 



CO 



1 



1 00 



oo 



t^ 



t^ 



1 1 



i^ 



CO 



CD 



1 CO 



CD 



to 



to 



1 to 



to 



^ 



-* 



1 



-* 



CO 



CO 



CO 



CO 



<M 



<N (M (N 



<M 



o o o o o 



CO 



OO 



00 



00 



CD 





CD 



CD 



to 





to 



to 



•* 





'^ 



TjH 



CO 





CO 



CO 



<M 





(N 



<N 



I o o o o o 



Gi Gi Gi Gi Gi Gi Gi 



00 CO CO CO 00 CO 



Gi Gi G^ Gi G> 1 

 OO 00 I 00 00 I 



I t^t— t^l^-Ir^t^t^r^ 



I CD CO CO CD CD 

 I to to to to to 



I CO CO CO CO CO 



CO CD CO CO CD CD 

 to to to to to to 



CO I CO CO CO I 



I (M C<l !M (M (M !N !M I Oa I CN I 



o o o o o 



Gi Gi \ Gi Gi 



00 CO 00 00 CO 



t^ t^ t^ I Ir^ t^ 



CD CO CO CO CD 



to to to to 



CO I CO CO 





CO ai 1— 1 



ft & 



s 



c 



S S H 



cj ^ 



I— H ""^ ^ 



•2 § a 







1=1 



CO U o 



S 



d 



-5 



r-l 







CD 



O 



o 



1-4 Ph 



CO 'r^ 



-*-++-;- 



a S 



.a q:^ H a 



