STRUCTURE OF THE BOLL 



63 



^ 



m 



I 



1 



a 



43 3 



_^ 3 ns 



III! 

 Jill! 



ii IN 



'3 s fab^ 



II!! 



- o % 



o cS o 



ti ajQQ * 



ffif*i s 



5 PE, S O -rO 



Pll 

 I tfl^ 



^J^'O 

 & 



^J -*3 f-l O 



S rj ? S > 



a !f4i o- 



l^l>l > 



4 g s^'d ^-gj 



iin linn 



p*" ^-T tT ^^ ^r ^ *" rC ^r^ ^T _ * 



e -o" 



- 



'a, 

 H 



aT3 

 i 

 c * 



p^ 

 J t 



a. c 



s " 



5 



