110 PHYSIOGRAPHY. 



Calcareous Spar. 



Color, brick-red, like the Heulandite from Fassa, Tyrol. 

 Its only locality is Trieste. 



iii. Eugnostic Carbon-Spar. BREITHAUPT. 



Pon P = 105 5'. 



.Cleavage parallel to the primary rhomboid, very distinct. 

 Hardness (scale of BREITHAUPT) =3-75. ..4-00. 

 Sp.gr. = 2-7170, a clear cleavage crystal from Iceland. 



2-7171, a clear cleavage crystal, but of a flesh-red 



color, from Iberg in the Hartz. 



2-7177, a clear cleavage crystal, from the same place. 

 2-7179, a cleavage crystal, from Rotluf in Chemnitz, 



in the Erzgebii ge. 



2*7190, a clear crystal, from Ahren in Tyrol. 

 2-7190, three clear cleavage crystals, from Boiza in 



Siebenburgen. 



2-7203, cleavage crystal, from a beautiful white Cal- 

 careous Spar from Moderstolln, Schemnitz. 



1. A variety analyzed by STROMEYER, from Iceland, contained 

 Carbonic acid - 43-70 



Lime - 56-15 



^ Oxide of manganese and iron - 0-15 



iv. Polymorphous Carbon- Spar. BREITHAUPT. 



P on P = 105 8'. 



Cleavage parallel to the primary rhomboid very distinct. 



Hardness = (scale of BREITHAUPT) =0-4. 



Sp.gr. = 2-7088, locality not known. 



2'7089, a cleavage crystal. Maxen at Dresden. 

 2-7100, a cleavage crystal. Braunsdorf in Tharand. 

 2-7110, a cleavage crystal, of a pale wine-yellow col- 

 or, locality unknown. 



2 7111, a cleavage crystal, of a pale wine-yellow col- 

 or, from Derbyshire. 

 2-7122, a cleavage crystal, milk-white to blue, from 



Cziklowa in the Bannat. 

 2 7125, a cleavage crystal, white and transparent, from 



StanowskiGorni in Karczowka. 

 The following varieties probably belong to this species. 



