1922] 



NATURAL SCIENCES OF PHILADELPHIA 



119 



Wherry 8 showed the following forms: b (010), a (100), h (310), 

 1 (430), m (110), n (340, u (130), p (101), and s (111). 



Wavellite, Zbirow, Bohemia 



A single crystal from a druse associated with radiations of the 

 mineral from Zbirow, Bohemia, was measured. The faces were 

 very dull, and gave poor reflections. The following forms were 

 noted b (010), m (110), and p (101). The latter was not striated. 



Table VI. Wavellite Angle Table 



Orthorhombic; a : b : c = .5520 : 1 : 4067 

 po = .7365; q =.4067 



8 Private communication. 



