Baron Toll, June 1904
Baron Toll on New Siberia and the Circumpolar Tertiary Flora, July 1890
The Desiccation of Eur-Asia, June 1904
The Old Beds of Amu-Daria, September 1898
On the Teachings of Physiography, October 1893
The Pampas, April 1894
Some of the Resources of Canada, March 1898