TAB. III. 



CALX carbonata primitiva. 

 Primitive crystallized Carbonate of Lime. 



Class 2. Earth. Order 1. Homogeneous. 

 Gen, 1. Lime. Spec. "2. Carbonate of Lime, 

 Div. 1. Crystallized. 



Syn. Chaux carbonatee primitive. Hauy,v. 2. 132, 



Upper figures. "We believe these small crystals repre- 

 sented on the piece of pyritaceous coaly substance, are the 

 true nucleus or primitive crystal of carbonate of lime, having 

 measured them as well as we could. It appears to be a rare 

 thing at present to find them so perfect in Britain. 



Those that are larger are either foreign or partaking of 

 the pearly lustre belonging to the Sidero Calcite of Kirwan, 

 v. 1. 105. Chaux ferifere, Hairy, v. I. 175. The line of 

 separation is hardly discernible. 



Lower figures. The fractures in the mass afford an 

 excellent help to discern these as little flat primitives ; those 

 detached agreeing with the fractures of the flat mass, These, 



