Triin.siu-li<'ii.<- i>l' t/ie (leoloiiical Soeictif Vol. 2, PLATE 2o 



OXYB OF TIN. 

 Elc I'cn III Aloiiifica tio n 

 F'gi'''-- Fiq.m. 



Fuj.l"4. 



Fiq.llb. 



Fiq. 116. 



Fici.lll. 



^^^^^ 



Fig.m. 



Fi'q.ieo. 



Fi^.181. 



^ 



i=^=^ 



Twelfth MotUficaiivn 



Fui. 184. 



Fu,.185. 



Fia. Id2. 



Fig. 185. 



^ 







2 





-% 



L 4 



L 



6 







■5 



e 



9 



1 



f> 



6 



— 







^ 



PuhtishM hu WMimn milip.!, London, ,S,.f. 



lK/.<on ItJwry .u-iilp. 



