PLATE 17. 





to 





I 



ft! 



I ^ •• 



« a II 



O § § 



6 



O •§ 



=2 *> a 



a *» is 



vt 



as 



2; 





a 



=0 



^ 



2 



"5 •* > 



• s ■ 



«?; o ^, 



*■» s? 5 



a s ^^ 



to -2 .2 



jo « 



O ft. 



ADLARD «l SON. IMP«. 



