83 



TAB. CXLIV. 



1 his is nearly of the same formation as the last, the 

 crystallization radiating from various centres with the ter- 

 minations meeting* : they however are in more determined 

 columns of three sides, and the pyramids at first sight 

 appear more simple : however, there is a tendency to double 

 each face of the pyramid, making, like the metastatique, a 

 six-sided pyramid. This is one of the darkest-coloured ones 

 of this nature. 



* The Radii in Mr. Hall's specimen, mentioned tab. 138, are a foot long 1 , 

 the sides of which are divided by a double direction of curved lines crossing 

 to a central bar, consequently circumscribing rhombic forms with two con- 

 vex and two concave sides. 



