HOXEYMAN NOVA SCOTIAN GEOLOGY. 115 



tions of the Cobequid Mountains. I should only have been too 

 glad to have been able to refer it to the silurian of band No. 1, 

 as this would have been a notable discovery. The lithology of the 

 boulder attested to its distant extraction. 



This had travelled at least 60 miles. I would observe here that 

 it is either in Red Heads, vide Admiralty Charts, or red banks, or 

 the adjoining beaches, that the greatest number and variety of 

 boulders are to be found. These Heads and Banks are sections of 

 boulder clay or drift. 



Passing eastward to the next head, Lawrencetown, we have fine 

 beaches, with great abundance and variety of boulders. 



Here we found as before — syenites, diorites, porphyries. A new 

 feature here was the occurrence of granites of band No. 1. These 

 come from granite, which occurs to the north of Lawrencetown. 

 Inland large boulders of these granites occur as rockes perches, 

 on polished and striated surfaces. These beaches are remarkable 

 for their abundance of lower carboniferous limestone boulders. 

 These are large and small and in sufficient numbers to be of some 

 service to the farmer. 



Some of these are bituminous, emitting a strong odour when 

 rubbed ; others of them are highly fossiliferous, producing fine 

 specimens offenestella. 



Another remarkable boulder which I found here contained a fine 

 though somewhat rubbed cast of a lepidodendron. This, with the 

 boulders of limestone, had travelled 35 miles at least. 



Still another remarkable boulder which I found was an agate, 

 size, 2^x2x1^. It is largely composed of cacholong, and has 

 numerous small cavities with quartz crystals, some of these are 

 amethystine — the sides show that the matrix was trap. 



Farther east in the extensive and lofty banks of boulder clay of 

 Half Island and their beaches, we found abundance of massive and 

 small boulders of granites, syenites, diorites and amygdaloids, and 

 at Three Fathom Harbour we noticed particularly that triassic 

 amygdaloids were still of frequent occurrence. 



The nearest point whence these amygdaloids and agates could 

 come to Lawrencetown and Three Fathom Harbour — are Bass River, 



