62 PROCEEDINGS OF THE WASHINGTON MEETING 



mineralogic description, in collaboration with Dr. H. E. Merwin, will be pub- 

 lished later. 



Presented in abstract extemporaneously. 



CRYSTALS AND CRYSTAL FORCES 

 BY F. E. WEIGHT 



(Abstract) 



A general discussion of crystals as systems of vectorial forces, with special 

 reference to their individuality and their behavior with respect to other 

 systems of forces, special emphasis being placed on the individuality of crystals 

 as it finds expression in the so-called false equilibria of thermodynamics. 

 Methods for the measurement of crystal forces were considered briefly. 



Presented in abstract extemporaneously. 



EXTENSION OF THE MONTANA PHOSPHATE DEPOSITS NORTHWARD INTO 



CANADA 



BY FRANK D. ADAMS AND WM. J. DICK 



(Abstract) 



The paper described an investigation undertaken for the Commission of 

 Conservation of Canada for the purpose of ascertaining whether the great 

 phosphate deposits recently discovered in Montana, Idaho, Wyoming, and Utah 

 could be traced northward into Canada. Three lines of section across the 

 Rocky Mountains in Canada were examined and were described. These are 

 those on the North Kootenay Pass, the Crows Nest Pass, and on the main line 

 of the Canadian Pacific Railway. In the most northerly of these sections, 

 crossing the Rocky Mountain National Park at Banff, in the province of 

 Alberta, the phosphate was discovered. 



Presented in abstract extemporaneously by the senior author. 



Discussion 



Mr. L. D. Burling : The contact between the Devonian and the Cambrian 

 in the North Kootenay Pass section was craite naturally ascribed by Dawson 

 to faulting, but the direct superposition of the two systems described by 

 Professor Adams is strikingly corroborated in three other widely scattered 

 localities: (1) at Elko, British Columbia; (2) in the mountains near Upper 

 Columbia Lake, and (3) along the main line of the Canadian Pacific Railway, 

 just west of Banff, Alberta, where the Sawback formation has been shown to 

 directly underlie the intermediate limestone of the Devonian and to be of 

 Cambrian age; 25 miles to the west, however, the Cambrian is overlain by 

 10,000 or more feet of Ordovician and Silurian strata. 



Of interest also in this connection will be the statement that the small 

 "downfaulted block" which has been described as representing the "Jurassic" 

 in the Canadian Pacific Railway section west of Banff is now believed to 



