62 



RECORDS OF THE AUSTRALIAN MUSEUM. 



faces are for the most part smooth and bright, but the prism 

 faces are strongly striated vertically and sometimes give multiple 



images. 

 Angles 



Forms. 



C 

 b 



m 

 M 



I 



9 

 n 



d 

 f 



y 







to 

 i 



001 

 010 

 110 

 230 

 120 

 130 

 140 

 201 

 021 

 041 

 221 

 111 

 223 



The other figured crystal is a fragment of 1 x -7 x -4 cm., 

 but it has what seems to be a new macrodome,/ (501) as a fairly 

 large but somewhat rough (apparently etched) face, yielding only 

 a patch of light in the telescope. It may possibly be an acci- 

 dental plane, caused by contact with a neighbouring crystal, but, 

 if so, it would be unlikely to fall in a zone as the measurement 

 indicates. 



Measured. Calculated. 



4> P <t> P 



89° 35' 77° 90° 77° 30' 



The presence of the rare prism U is indicated by a very narrow 

 plane which, however, was measured in maximum illumination. 



BERYL. 



TORRINGTON, NEW SOUTH WALES. 



(Plate xvi., figs. 1, 2.) 



Some fine large prisms of beryl have recently been discovered 

 Dear Torrington. The}' occur attached to crystals of quartz, 



