156 ROOKS, 



Igneous, continued. 



Chlorite Schist. Piece di Livinallengo, Tyrol 

 Micaceous Schist, Elba. 



Granitiferous Mica Schist. Hazelden, Pirthshire, Scotland. 

 Diabase. Ro**ie Hill, 



porphyritic. Bargone, Italy. 



altered. Libiola, Italy. 



Porphyry. Or HUM, Italy. 



green antique, three specimens, 

 quartzose. St. Ulrich, Tyrol 

 red. Italy, 



* from boulder in Glen Garr, Scotland. 



Spherophyric Felsyte, - Globular Porphyry. Desert near Ca'm 

 Serpentine. Kildoiun Quarry, Cornwall 

 Long Alley, ,, 



Treal Quarry, 



Poitewo Quarry, 



Signal Staff Quarry, 



with Bastite. fiossiylione, Italy. 



micaceous schistose. Syr a, Greece. 



Phthanyte. Norway. 

 Flint. Devonshire. 



Nodule with cavity. Italy. 



Peridotite. (altering produces Magnesite). Batdatsero, Italy. 

 Obsidian, several pieces, one cut for Arrow-head, Mexico. 

 Andesyte, near Luxor, Egypt. 

 Epidote. Monte Vio, Italy. 

 Blue Steatite. Norn-ay. 

 Hornblende. 



Columnar Basalt, Staff a, Scotland. 



