TAB. XXXV. 



CALX carbonata, var. metastatica a 

 Carbonate 'of Lime, var. metastatic. 



Class 2. Earths. Order 1, Homogeneous. 

 Gen. 1 . Lime. Spec. 1. Carbonate of lime. 



Div. 1. Crystallized. 



Var. Metastatic terminating with equiaxed and other faces. 



This fine yellowish crystal shows at the apex three po- 

 lished faces, which are parts of the equiaxed crystals : se*> 

 veral others next to them show the approach to the primi- 

 tive rhomb, and three primitive faces ; the rest is part of 

 an unequal-sided or flattish metastatic. The double re- 

 fraction is seen, when held in certain directions, by the 

 prismatic tints, which are very beautiful, and in some posi- 

 tions catch the rays of light, so as to show them in great 

 abundance in the numerous flaws ; which flaws would be 

 some detriment to the specimen, if this appearance did not 

 so well compensate for them. They also serve by their 

 direction' to show how the fragments are obtained which 

 exhibit the nuclei. See tab. 2. 



