WHITLOCK. — CRYSTAL FORMS OF CALCITE. 



321 



t! (8- 14-22-3) = (11 -3 -11). This scalenohedron was observed 

 by Whitlock 87 on crystals from Lyon Mountain, N. Y. The poles of 

 the form lie at the intersection of several well marked zones. In the 

 combination cited, well developed planes of the form bevel the edges 

 8-8-16-3 : OlTO. The form falls in normal series N5 and may be 

 regarded as fairly probable. 



87 Whitlock, H. P., N. Y. State Museum Memoir 13, Plate X, Fig. 4 

 (1910). 



