I 



& 



4 



13 











17 18 



441 



19 io 



10 II 



J2 



26 



4 44 



IS 2Z 2.3 24 



' * 



27 28 



Z9 3 



35 



37 38 



39 40 



43 



FIG. 7. 

 (For description, see next pajre. ) 



