After further surveying in Tierra del Fuego, they returned on 5 March 1834 to visit the missionaries but found the huts deserted. Then canoes approached, and they found that one of the natives was Jemmy Button, who had lost his possessions and had settled into the native ways, taking a wife. Darwin had never seen "so complete & grievous a change". Jemmy came on board and dined using his cutlery properly, speaking English as well as ever, then assured them that he "had not the least wish to return to England" and was "happy and contented", leaving them gifts of otter skins and arrowheads before returning to the canoe to join his wife. Of the first visit, Darwin had written that "Viewing such men, one can hardly make oneself believe that they are fellow creatures placed in the same world. ... It is a common subject of conjecture; what pleasure in life some of the less gifted animals can enjoy? How much more reasonably it may be asked with respect to these men", yet Jemmy had readily adapted to civilisation and then chosen to return to his primitive ways. This raised awkward questions; it jarred with Charles Lyell's sheltered views, expressed in volume 2 of his "Principles of Geology", that human races "showed only a slight deviation from a common standard", and that acceptance of transmutation meant renouncing man's "belief in the high genealogy of his species".