S.T13Z 



J><7</r3U. 



Fig.l . 



Tip. 2. 



:n 



Tip. 4- -a 



G 



Tip 



IS 



A. 



-E 



Tip. 4. b 



B 



1 1 



1 



I U) 



I 

 w f+E 



D 



,3. 



Ar 



A B 



1) 



~N 



1ST B 



Enpruted ibrtht / naltofThHosopfy Published by Baldwin,, traded v.VHSzl 



