Fiq. 1. 



Fig. 2. 





/m^ 





^00 inch 





/ 



Fiq. 3. 



Fxg.7. 



T.H.d£i .^.T.ifonid: Iji/i. 



IV. Wests C9 imf. 



London. Jo'hxL Va,n Voorst, MDCCCLIDCIX. 



