His last journey was to Russia. At Cherson he received an urgent request to visit a lady who had the fever. The place where she lived was many miles off, and no good horses were to be obtained. But he was determined not to disappoint her; so he procured a dray horse and started for his destination on a wintry night, with rain falling in torrents. As a result of this journey he was stricken down by the fever, and died 20th January, 1790.