After due investigation of such and various other phenomena, Sir William crookes, among other theories to explain them, gives this theory:-'The actions of a separate order of beings, living on this earth, but invisible and immaterial to us.
"The Fairy-Faith in Celtic Countries"
W. Y. Evans Wentz
Telepathy in these first two aspects has been likewise accepted as a scientific fact by workers in psychical research like Sir William crookes, Sir Oliver Lodge, William James, and by many others.
"The Fairy-Faith in Celtic Countries"
W. Y. Evans Wentz
The testimony of such a man as Professor crookes who had witnessed feats of human levitation greatly stirred him; but in the end he drifted back to his early passions-music and mathematics.
"Melomaniacs"
James Huneker
