Plate 13 



^ 



v-h 



V 



r sx 



^J) 



t>9 





I 



= :'-/ 



• 



V 



7/ 



f c 



A ( - 





V 



is M 





<kP 



7X 



^ - 



A 



73 



if ^ 



If 





2J> 



fN" 



74 



!) s / ** 



