6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 75 



relation to the geology of the " Rocky Mountain Trench " from 

 Golden to Canal Flats. 



L. D. Burling (1922) in a paper " On a Cambro-Ordovician section 

 in the Beaverfoot Range near Golden, British Columbia " * "' offers 

 new data regarding the stratigraphy of the upper part of the Cam- 

 brian and the Ordovician section." Two new formation names are 

 proposed, Glenogle shales for the graptolite shales, and Beaverfoot 

 formation for the Halysite beds. 



In a paper published in March, 1923 (Smithsonian Miscellaneous 

 Collections, Volume 67, No. 8, p. 463) I used the name Glenogle 

 formation for the shales containing the graptolite fauna and referred 

 it to the Ordovician; also the name Beaverfoot formation for the 

 limestones, quartzites and interbedded shales on the crest of the 

 Beaverfoot Range, as described by Allan. Reference should have 

 been made to Burling's previous use of the names, but as I had used 

 them in manuscript notes for several years, it was overlooked when 

 the paper went to press. 



The Burling section of the Beaverfoot Range was measured on 

 the summit of the range (loc. cit., p. 452) where it is crossed by the 

 ''Whiskey trail" about 15 miles (24.1 km.) southeast of Golden, 

 and a small section of the Glenogle graptolite shales was measured 

 at Glenogle Creek just north of the Kicking Horse Canyon. 



Judging from Allan's section (ante, p. 4) of the north end of the 

 Beaverfoot Range,^ Burling crossed in his section an area of shales, 

 limestones and quartzites where faults of large and small degree and 

 sharp folds occur. His section appears very similar to that given in 

 Allan's diagrammatic section for the eastern slope of the Beaverfoot 

 Range where the section appears to be unbroken from the Silurian 

 limestones down through the " Graptolite " beds into the Goodsir 

 formation. 



IMessrs. Allan, Schofield, and Shepard furnished me with a list 

 of the localities at which they found fossils, and with their published 

 results in hand I enjoyed many advantages that were not available 

 to them. 



As my knowledge of the Silurian and Devonian faunas was only 

 of a general character, I asked the Director of the U. S. Geological 

 Survey to permit Dr. Edwin Kirk to accompany me in order that he 

 might collect and identify the fossils in the field and correlate the 

 formations and faunas locally and also with those in the great inter- 



^Geol. Mag., London, Vol. 69, 1922, pp. 452-461. 



''Geol. iSurv. Can., 1913, Guide No. 8, Pt. II, pi. of sections. 



