I don't know whether you have heard of the London "Society for Psychical Research," which is seriously and laboriously investigating all sorts of "supernatural" matters, clairvoyance, apparitions, etc. I don't know what you think of such work; but I think that the present condition of opinion regarding it is scandalous, there being a mass of testimony, or apparent testimony, about such things, at which the only men capable of a critical judgment--men of scientific education--will not even look. We have founded a similar society here within the year,--some of us thought that the publications of the London society deserved at least to be treated as if worthy of experimental disproof,--and although work advances very slowly owing to the small amount of disposable time on the part of the members, who are all very busy men, we have already stumbled on some rather inexplicable facts out of which something may come. It is a field in which the sources of deception are extremely numerous. But I believe there is no source of deception in the investigation of nature which can compare with a fixed belief that certain kinds of phenomenon are _impossible_. My teaching is much the same as it was--a little better in quality, I hope. I enjoy very much a new philosophic colleague, Josiah Royce, from California, who is just thirty years old and a perfect little Socrates for wisdom and humor. I still try to write a little psychology, but it is exceedingly slow work. No sooner do I get interested than bang! goes my sleep, and I have to stop a week or ten days, during which my ideas get all cold again. Nothing so fatiguing as the eternal hanging on of an uncompleted task.... I try to spend two hours a day in a laboratory for psycho-physics which I started last year, but of which I fear the _fruits_ will be slow in ripening, as my experimental aptitude is but small. But I am convinced that one must guard in some such way as that against the growing tendency to _subjectivism_ in one's thinking, as life goes on. I am hypnotizing, on a large scale, the students, and have hit one or two rather pretty unpublished things of which some day I hope I may send you an account.... Ever faithfully yours, WM. JAMES. * * * * * When the American Society for Psychical Research was organized in Boston in the autumn of 1884, Thomas Davidson wrote to comment on its apparent anti-spiritual bias. In the following reply, dated February 1, 1885, but more easily understood if inserted here out of its chronological place, James defined the society's conception of its function. In so doing he described his own attitude toward psychical research quite exactly:--