18(!9.] NATURAL HISTORY SOCIETY. 465 



on the north side of Cape Gaspe. Dipping to the southward, 

 these are overlaid at Little Gasp^ by the Devonian sandstones, 

 which extend along the north side of Gaspe Bay, and, rising on 

 the south side, form a symmetrical valley occupied by the waters of 

 the most beautiful bay in Canada. Towards the mouth of the 

 bay the Devonian sandstones, the representatives of the Old Red 

 Sandstone of Scotland, are overlaid by Lower Carboniferous 

 rocks, and a little further to the southward are again pierced by 

 the edges of the Upper Silurian limestones, forming, with the 

 overlying carboniferous conglomerates, the magnificent scenery of 

 Perce and its arched rocks. We have in Gaspe representatives of 

 the Lower Silurian, the Upper Silurian, the Devonian, and the 

 Lower Carboniferous periods, all admirably exposed in coast clifis ; 

 and in the case of the Upper Silurian and Devonian, abounding 

 in characteristic fossils. The visit of Principal Dawson had 

 reference to farther study of the fossil plants of the Devonian 

 sandstone, many species of which have been described in his 

 papers in the " Canadian Naturalist'' and in the " Journal of the 

 Geological Society." With Messrs. G. T. Kennedy and G. M. 

 Dawson, he explored the north and south sides of Gaspd Bay, 

 and obtained lai-ge and interesting collections of fossil plants. 

 Among these are two large trunks of Prutaxites Logani, a 

 beautiful species of Psilophi/ton, and a species of Cy do stigma^ 

 a genus hitlTerto found only in the Devonian rocks of Ireland. 

 Several interesting remains were also found, including species of 

 large fishes (^Machairaccmthus); and Mr. Kennedy was so fortunate 

 as to find a Cephalaspis, the first representative of the genus as 

 yet found in America. The animal fossils have been placed in 

 the hands of Mr. Billings and Dr. Newberry for comparison, and 

 the plants will probably be described in detail in the course of the 

 coming winter." 



Specimens of some of the more interesting fossils above referred 

 to were exhibited to the Society. 



Mr. A. S. Ritchie then read a paper on the Small Cabbage 

 Butterfly (^Pieris rapcn), which appeared in the September 

 number of this Journal, page 293. 



Mr. J. F. Whiteaves made a communication, entitled, " On 

 some Results obtained by Dredging in Ga^pe and ofi" Murray 

 Bay." This paper also will be found in the September number, 

 at page 270. 



