REPRESENTATIVE PLEISTOCENE KAUN7E. 317 



distinct interglacial deposit. It is to be observed, however, they were 

 included within the central part characterized as a softer blue clay, between 

 two beds apparently harder and more stony. 



Additional specimens from this place have recently been obtained by Mr. 

 J. B. Tyrrell, of the Geological Survey of Canada, and have been kindly 

 communicated to us. Mr. Tyrrell has also found vegetable remains in a bed 

 under the bowlder clay at Rolling river, Manitoba, which are noticed in 

 Professor Penhallow's paper. They were accompanied with fresh-water 

 shells of the following species, determined by Mr. Whiteaves, F. G. S., 

 Paleontologist to the Geological Survey of Canada: 



Lymnea cdtascopium f, variety with very short spire. 



Valvata tricarinata, and a keelless variety. 



Amnicola porata f 



Planorbis parvus f 



P. bicarmatus. 



Pis idh im ab clitum. 



Sphcerium striatinum. 



With these was the centrum of a vertebra of a small fish. 



(5.) The most western locality of bowlder clay with plants is that described 

 by Dr. G. M. Dawson in the vicinity of Skidegate, Queen Charlotte's islands. 

 At this place hard bowlder clay is overlain by stratified sand and gravel, 

 ten to fifteen feet in thickness. The bowlder clay in places shows bedding 

 and holds a few marine shells (Leda fossa, etc.). In tracing the bed along 

 the coast the shells disappear and the clay is found to contain fragments of 

 decayed and partially lignitized wood. Specimens of this were collected, but 

 appear to have been mislaid and could not be found in time for this paper.* 



(6.) The most eastern locality from which I have collected Pleistocene 

 plant remains is that on the northwest arm of the River Inhabitants in Cape 

 Breton, described in "Acadian Geology," p. 63. This is a hardened peaty 

 bed resting on a gray clay and overlain by twenty feet of till or bowlder 

 clay, apparently the lower bowlder clay. It is quite hard and burns with 

 flame in the manner of a lignite, and contains twigs and branches of 

 coniferous trees and a great variety of fibrous and epidermal tissues appar- 

 ently of swamp vegetation, which have been examined'by Professor Pen- 

 hallow. This locality is of special interest as showing a bed of vegetables 

 evidently not drifted and under the till or bowlder clay. It shows that iln- 

 was deposited on what had been a land surface and under circumstances 

 which did not disturb a bed of soft vegetable matter. It indicates also a 

 mild climate preceding the deposit of the bowlder clay rather than an inter- 

 glacial period. There was no evidence in this case of any land-slip or other 

 accidental disturbance, but rather of successive deposition-. 



* Report Geol. Survey of Canada, 1878-'9, p. 91b. 



