368 Mineralogy and Geology of Nova Scotia. 



their motion during the preceding parts of the day was as 

 follows : — 8 a. m., w. by n. ; 10£ a. m., w. ; 1 p. m., s.w., crinis 

 fibratus at 5J, and during the evening, was moving w. by n. 



Art. XI. A Lecture on the Mineralogy [and the Geology] of Nova 

 Scotia. By Mr. Titus Smith, delivered on March 5. 1834, 

 before the Halifax Mechanics' Institute, and printed by order 

 of the Institute. [Communicated to this Magazine by R. G.] 



SPECIMENS. 



In describing these specimens the term " rolled " is applied to worn frag- 

 ments of which there is no mass near to the place in which they are 

 found, and there are several of which I have seen no mass in the pro- 

 vince. Those specimens whose locality is not named, are from the 

 township of Halifax. 



Slate 1. Mica slate, rolled piece, not common. 



Slate 2. Ironstone slate, with oolite (supposed coral gravel) projecting. 



Slate 3. The same with the oolite decayed. 



Slate 4. Alum slate. 



Slate 5. Ironstone with crystals of hornblende. 



Slate 6. Ironstone containing pyrites. 



Slate 7. Hard calcareous slate containing pyrites. Not burning to lime. 



Slate 8. Calcareous slate containing pyrites. Burning to lime. 



Slate 9. Slate without pyrites, containing veins of limestone. Preston. 



Slate 10. Calcareous slate, containing garnets. Burning to lime. 



Slate 11. Siliceous slate. 



Slate 12. From under peat, showing the cavities where pyrites had 

 been. 



Slate 13. Ironstone slate contiguous to the common slate. 



Slate 14. Siliceous, with herborisations. 



Hornblende 1. Rolled piece. Shubenacadie. 



Hornblende 2. Approaching to whinstone, large rolled pieces. Preston. 



Hornblende 3. In granular quartz, large rolled piece. Preston. 



Hornblende 4. Mixed with quartz, large rolled stone. Preston. 



Quartz 1. Greasy quartz. 



Quartz 2. Crystallised quartz. 



Quartz 3. Quartz passing into jasper. 



Quartz 4. Quartz with iron ore. 



Quartz 5. Amethystine and crystallised quartz. From the granite 

 district. 



Quartz 6. Quartz and slate. 



Quartz 7. Whinstone veined with quartz. 



Iron 1. Ore formed mostly within thirty years, from decomposed vitriol 

 dropping from a slate rock, near the head of the North-west Arm. 



Iron 2. Red ironstone, partly crystallised, rolled piece. Hammond 

 Plains. 

 Iron 3. Magnetic iron ore, rolled piece. Shubenacadie. 



Iron 4. Herborisations of red oxide of iron, in the same kind of sand- 

 stone with iron 2., rolled piece. Shubenacadie. 

 Felspar 1. Common. 



Felspar 2. Semitransparent and opaque felspar mixed. 



Felspar 3. A fragment of pellucid felspar containing shorl. 



Shorl 1. From the line where the ironstone and granite unite. 



