HONEYMAN ON NOVA SCOTIAN GEOLOGY. 393 



Series. This includes the Llandovery rocks, page 2. He adds : 

 " The lists of the Geological Survey show that about ninety species 

 of fossils are known in the Lower and Upper Llandovery strata of 

 Wales and its neighbourhood. These, taken together, are, on the 

 whole, so distinctive that it has been proposed to divide the strata 

 in which they occur into a middle Silurian Series, page 231. 



The difference between Professor Ramsay's Middle Silurian and 

 our Nova Scotian Silurian is, he begins with the Mayhill sandstone 

 (Upper Llandovery) and descends ; including the Lower Llandovery. 

 I begin with the Mayhill sandstone and ascend, including the 

 Clinton. 



Distribution of the Upper Arisaig Series. 

 Localities. 



D. Upper Ludlow, England. Lower Helderberg, United States! 



Arisaig and Lochaber, Antigonish County. Spring^ille, 



Lish Mountain, Blanchard, Merigomish, McLellan's Brook. 



Sutherland's River and Earltown, Pictou County. 

 C. Aymestiy limestone, England. Niagara limestone. United 



States.! Arisaig and Lochaber,, Antigonish County. Spring- 



ville, Pictou County. 

 B'. Upper Clinton, United States. [ Arisaig, East River, Blanchard, 



Irish Mountain, Sutherland's River, Erench River, Cobe- 



quids. 

 B. Lower Clinton, Arisaig. Barney's River, Sutherland's River. 

 A. Mayhill sandstone, England. Medina sandstone, United 



States.! Arisaig, Lochaber, Marshy Hope, Barney's River, 



McLellan's Mountain, Sutherland's River. 



It will be observed that the Counties of Antigonish and Pictou, 

 include all the above mentioned localities where we find rocks 

 containing Arisaig fossils. In the '^ Webster Collection," in the 

 Provincial Museum, there is a small collection of fossils which 

 appear to be of the Arisaig type, although these are not recognizable 

 characteristic fossils. It is possible that they are from localities in 

 the western part of the Province, mentioned, in "Dawson's Acadian 

 Geology." These localities I have not yet examined. 



