Plate 75. 



f<f5 inch.. 



Fiq.7, 



J - 



Fig. 6 



/ / -V>-1 



~\Y''v^j^.^ 



ig.D. 



1 



%^~ 



I 



X 



100 mch 



Fiq.l. 



X 



!^ 



'-A 



V ' 



^^^^ 



T.HMl.Ji.T.HoViA,lui-i.. 



W.WettgtCorimp 



LonAon: Joiin Va-ti Voorst, MDCCCLXXDC. 



