394 Scientific Intelligence. 



mary cooling agent. As the upshot, a liquid will be at hand, 

 boiling at about 5° absolute, or —268° C, but more expensive 

 than liquid hydrogen, in a much higher ratio than liquid hydro- 

 gen is more expensive than liquid air. By comparison, ' potable 

 gold ' would be a cheap fluid. Nor could the precious metal, in 

 that, or any other form, be employed for a higher intellectual 

 purpose than in promoting and extending researches of such 

 boundless promise and commanding interest as those conducted 

 at the Royal Institution." 



II. Geology and Mineralogy. 



1. Geological Survey of Canada. G. M. Dawson, Director. 

 Annual Report (New Series) Yol. XI. Reports A, D, F, G, J, L, 

 M, S, for 1898. Pp. 853, 20 plates and figures in text, 7 maps. 

 Ottawa, 1901. — The first of these, the Summary Report of the 

 Director, has already been mentioned in these pages. 



Report D on the Yellowhead Pass Route is by James McEvoy. 

 The region traversed extends from Edmonton and Strathcona on. 

 the north, Saskatchewan River westward to the Athabasca River 

 valley, and thence up through the Yellowhead Mountain pass 

 and into the Frazer River valley, ending at Tete Jaune Cache. 

 The formations, their names and correlations, are as follows, viz : 



Tertiary Paskapoo beds ) T 



r in -i - ,. i . y .Laramie. 



^ : \ Edmonton beds 



Cretaceous -< -r,. -, ^ ttmi ; 



( Pierre and Jb ox Hill. 



Devono-Carboniferous. 



r, -, . ( Castle Mountain group. 



Cambrian ■{ D t>- • 



( Bow Kiver series. 



Archean Shuswap series. 



D. B. Dowling, in F and G, reports on the Geology of the 

 West shore and Islands of Lake Winnipeg (F), and on the East 

 shore of Lake Winnipeg and adjacent parts of Manitoba and 

 Keewatin, from personal surveys and supplemented by notes made 

 by his predecessor, J. B. Tyrrell. The formations recognized are 

 compared with those described in the Geology of Minnesota, 

 Yol. III. The correlations are as follows, viz : 



?Utica Stony Mountain formation = Richmond Group. 



f Upper Mottled limestone = Maclurea beds. 



rp J Cat-head limestone = Fusispira and Nematopora 



irenton <j bedg< 



(^ Lower mottled limestone = Clitambonites beds. 

 ? Black River Winnipeg sandstone and shales. 



Collections of fossils from some of these formations have 

 already been described by J. F. Whiteaves in Paleozoic Fossils, 

 Yol. I'll, Parts II and III. 



