O'^ {7 is W^ 



7 



Plate 17. 



<pr~ 



cfct iJ~^ 



j<& Aal •/><* 



Sty. 57 



■' 7. lit/ MX* 



^^U ^ 



./ /////// 



Lil/i ,'/ 'g/h/t.-M, Jfn ><'/■* 



