R. Osgood Mason 
Telepathy 

There is inquiry concerning Telepathy or Thought-Transference-is it a fact or is it a delusion? Has Hypnotism any actual standing either in science or common sense? What of Clairvoyance, Planchette, Trance and Trance utterances, Crystal-Gazing and Apparitions?
In the following papers intelligent readers, both in and out of the medical profession, will find these subjects fairly stated and discussed, and to some of the questions asked, fair and reasonable answers given. It is with the hope of aiding somewhat in the efforts now being made to rescue from an uncertain and unreasoning supernaturalism some of the most valuable facts in nature, and some of the most interesting and beautiful psychical phenomena in human experience, that this book is offered to the public.