Fiq. 186. 



OXYD OF TIN. 



Macles. 



Fiq.181. 



Traruactwru of the tieohyu-al Society KoL 2, PLATE 24. 



Fur. 238. Fiy.189. 



s 



Fief. 2.^2. 



Fin. 2(10. 



Fiji.292. 



Fie/. 293. 



Fiff.294. 



Fig. 295. 



Fie). 29 6. 



Fit/. 297. 



Fiq.298. 



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Fia.200. 



Fief. 202. 



,b 



Fiq.299. 



Fiff. 



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W.Lowrtf si-iilp. 



