xiv M. BnoNGNiARx's Table^ 



Species 3. CALCIPHYRE.* 



Paste of limestone enveloping crystals of different kinds. 

 The structure imbedded, (empatee.) 



Principal varieties. 



Felspathic C Crystals of felspar disseminated in a compact 



limestone. 

 (The Col du Bonhomme, Brochant.) 



Garnet C Garnets disseminated in a compact or sac- 

 charine limestone. 

 (The environs of the Pic du Midi in the Py- 

 renees.) 



Hornblende C Hornblende disseminated in a compact lime- 

 stone. 

 (Isle of Tirey,+ Hebrides.) 



Genus 7. WITH A BASE OF CORNEAN. 

 (Corneene.) 



Species 1. VARIOLITE. (Blatterstein, perhtein, some 

 mandelstein^ &c. 



Paste of cornean containing nodules and veins, either cal- 

 careous or siliceous, which are contemporaneous or posterior 

 to the paste. 



Principal varieties. 



Common V A compact paste of a sombre green, reddish 



brown or violet colour, with crystallized 

 calcareous nodules. 

 (Variolites of the Drac, Oberstein, of the 

 Hartz, &c.) 



BcFONiTE V. A black paste with calcareous nodules. 



(Toadstone of Bakewell in England.) 



* The division of the mixed rocks with a calcareous base into three 

 species, far from being superfluous, is perhaps not carried far enough. 

 Here even the characters of geological position accord with the minera- 

 logical characters in indicating this division, 



+ Dr. Mac Culloch (Description of the Western Islands of Scotland, 

 Tol. 1. p. 50,) mentionsi that the Tirey limestone " is most distinguished 

 for the quantity of augite dispersed through it," and states that the horn- 

 blende occurs occasionally in large concretious. (Trans.) 



