Together with Martin Conway, G. S. Scriven and guides Ferdinand Imseng and Peter and M. Truffer he made the first ascent (in two and a half hours) of the west face of the Zinalrothorn in August 1878. With Albert Frederick Mummery and guides Alexander Burgener and Ferdinand Imseng he made the first ascent of the Dürrenhorn on 7 September 1879.