311 



H- 

 of the Gaspe region, and it is very possible that these 

 are related in time and cause to the pre-Mississippian 

 disturbance of the Arisaig region. Hence the time of 

 deposition of the Knoydart elastics was previous to later 

 Devonian time. 



Mississippian. — ^The fossils from the limestone at the 

 base of the Ardness formation are also present in the 

 Windsor dolomites at Windsor, Nova Scotia, and in rocks 

 of the same age on the Magdalen islands, thus leading 

 to the reference of the Ardness formation to the Windsor 

 series which, according to Schuchert* and Beedef, is the 

 equivalent of the Kinderhook of the Mississippi valley. 



Pennsylvanian f — The Listmore rocks are difficult to 

 place. Fletcher correlated them with the Millstone Grit 

 which underlies the Coal Measures and is of Pennsylvanian 

 age. The plant remains are uncertain and obscure and 

 any correlation based on them would have but little value. 



BIBLIOGRAPHY. 



Reference is here made to only a few of the more import- 

 ant papers dealing with the Arisaig region. For a complete 

 bibliography relating to the Silurian the paper by Twen- 

 hofel should be consulted as well as a forthcoming report 

 of the Canadian Geological Survey by Williams. 

 i860. J. W. Daswon, on the Silurian and Devonian rocks 



of Nova Scotia, Can. Nat. Geol., vol. V, pp. 132-143 

 i860. James Hall, Silurian Fossils of Nova Scotia 



Ibidem, pp. 144-159. 

 1864. D. Honeyman, on the Geology of Arisaig, Nova 



Scotia, Quar. Jour. Geol. Soc. London, vol. XX 



PP- 333-345- 



1874. E. Billings, Paleozoic Fossils, vol. H, pt. I. pp 

 129-144. 



1887. Hugh Fletcher, Report on geological surveys and 

 explorations in the counties of Guysborough 

 Antigonish and Pictou, Nova Scotia, Ann. Rept 

 Geol. Surv. Canada, vol. H, pp. 5P-128P. 



1891. J. W. Dawson, Acadian Geology, 4th edition, 

 London. 



*Schuchert, Geo. Soc. Am. Bull. 21, p. 551, 1910. 

 tBeede, New York State Museum. Bull. 149, p. 158. 



