PLATE 53 







313 



315 





*3fiT>IEAl - 



WFK* I * ^ 





316 



317 



:U:;-:;i."i. ( Kyln-nioulobin of the White I!;il (Alliinn of Mi/x inn ny/i-u*), showing eloii.naUMi six-M.lcil ].l;iti- 

 prinliicfil liy Huttciiinu' of priMii; niiiiihlv ln'xai;onal groups due to t\vinninic on lir;icli\- 

 pynuiiiil ;iiid interpenetran! twins mi unit pyramids. 



:;iii. Sunir. shouina: star-shape' 1 twins on unit pynuniil. 



:I17. S:inic, slicnviii.i; hfxasronal composites with higher nuiL'tiificatiou. 



\]^. ^;i!m'. ^lio\\iiur star-shapeil twin witli liinliiT magnification. 



