At the same time I worked a great deal for the Russian Geographical Society in my capacity of secretary to its section of physical geography. Great interest was taken then in the exploration of Turkestan and the Pamírs. Syévertsoff had just returned after several years of travel. A great zoologist, a gifted geographer, and one of the most intelligent men I ever came across, he, like so many Russians, disliked writing. When he had made an oral communication at a meeting of the society, he could not be induced to write anything beyond revising the reports of his communication, so that all that has been published over his signature is very far from doing full justice to the real value of the observations and the generalizations he had made. This reluctance to put down in writing the results of thought and observation is unfortunately not uncommon in Russia. The remarks on the orography of Turkestan, on the geographical distribution of plants and animals...