MT. COLLON (Page 84) S. face of N.W. arĂȘte. Mr. Grant and myself failed to find the ordinary descent of this ridge, and cut straight down from the first gendarme (before the ridge becomes rotten) by a chimney and diffi- cult slabs below it, keeping to the left directly down the face. I understood Pierre Maitre to say that he had on one occasion adopted a similar route. The descent took just over 2 hours snow to snow. E. ALEISTER CROWLEY.