PLEISTOCKNK I'OSSlLS. 27") 



ill tlie arctic rcfjioiis, and descriiied l»y so many arctic 

 explorers* 



One of the most marked illustrations is that of the 

 boring at Solsgirth, in Manitoha, on the Manitoba and 

 North-western railway, and at an elevation of I,?")? feet 

 above the sea.f At this place the section is as follows : 



Feet. 



1 . Loam . 2 



2. Hai'd IjIuo clay iind gravel 42 



,'i. Hard bluu (day aiul stones 10 



4. Hard yellow " hard pan "' 12 



5. Softer bluish clay 1(» 



0. " " " 74 



7. >Sand willi water 



8. Blue clay with stones 1,S(» 



9. (iray clay or shale (Cretaceous?) (i8 



mo 



Fraoiuenls of wood, more or less decayed and com- 

 pressed, were obtained from de])ths of 90, 107, 120 and 

 l.'5o feet from the surface. They were thus distributed 

 throut^h a considcralile thickness of the clay rather than 

 in a distinct interglacial deposit. It is to lie observed, 

 however, they were included within the central part 

 characterized a>s a softer Wue clav, between two jjeds 

 apparently harder and more stony. 



Additional specimens from tliis place have recently 

 been obtained by ]\[r. J. 15. Tyrrell, of the Geological 

 Survey of Canada, and have been kindly communicated 

 to me. Mr. Tyrrell has also found vegetable remains in a 



* See Manual of the Natural History, (ieology and Physics of 

 Greenland, by Professor T. R. Jones, issued by the Royal Society of 

 London, 1875, index — "Driftwood." 



+ Dr. G. M. Dawson, Trans. Royal Society Canada, Vol. IV., 1887, 

 sec. IV., p. 91. tt seq. 



