134 



A similar list, but with the name of Strophomena euglypha omitted, is 

 contained in Sir James Hector's paper " On the Geology of the Country 

 between Lake Superior and the Pacific 0;ean,'' &c., published in 1861, in 

 the seventeenth volume of the Quarterly Journal of the Geological Society 

 of London. 



The geology of Lake Winnipeg and its immediate vicinity has been 

 studied in detail by Mr. J. B. Tyrrell and Mr. D. B. Bowling, of this 

 Survey, in 1889, 1890 and 1891. Preliminary accounts of the progress of 

 these investigations have been published in the Summary Reports of the 

 Survey for those years and a joint report upon the work of these three 

 seasons is now being prepared. Mr. Tyrrell's conclusions as to the 

 sequence and correlation of the palaeozoic rocks of this region, form an 

 introduction to a paper entitled " Three Deep Wells in Manitoba," pub- 

 lished in the ninth volume of Transactions of the Royal Society of 

 Canada. In this introduction, all the limestones of the Red River 

 valley in Manitoba (except those at Stonewall, which, it is stated, may 

 belong to the Niagara limestone, and those at Stony Mountain, which 

 are clearly referable to the Hudson River group), and of the western 

 side of Lake Winnipeg are referred to the Trenton formation, and the 

 sandstones of Punk and Deer Islands, Grindstone Point, etc., to the Chazy 

 (St. Peter's) formation. In this connection, however, it may be remarked 

 that, so far, no fossils of any kind have yet been detected in the sand- 

 stones which are supposed to be referable to the Chazy (St. Peter's) 

 formation, except at their summit, in passage beds which probably 

 represent the Birdseye and Black River limestones. As elsewhere stated,* 

 " there is, at present, no satisfactory palseontological evidence for the 

 existence of the Chazy formation, or its equivalent, in Manitoba," or the 

 immediate neighbourhood of Lake Winnipeg. In a paper published in 

 the "Ottawa Naturalist " for June, 1895, Mr. Dowling subdivides the 

 Winnipeg and Red River limestones, in descending order, into the 

 "Upper Mottled limestones,'' the "Cat Head limestones," and the 

 " Lower Mottled limestones," and calls the sandstones of Punk and Deer 

 islands, etc., the " Winnipeg sandstones." 



The occurrence of rocks of presumably the same age as the Winnipeg 

 limestones at several localities on the Nelson River, Keewatin, had pre- 

 viously been recorded by Dr. Bell in the Report of Progress of this Survey 

 for 1878-79. Rocks containing similar fossils were discovered by Mr. 

 Tyrrell near Doobaunt Lake, in latitude 62° 44', and longitude 100°, in 

 1893 ; at Sturgeon Lake, north-east of Cumberland House, on the 

 Saskatchewan River, and at Fort Churchill, on the west side of Hudson's 

 Bay, in 1894, as noted by him in the Summary Report of this Survey for 



* Transactions of the Royal Society of Canada for 1889, vol. VIII., sect. 4, p. 83. 



