A. J. Linzmayer, May Frances Turner, June Bailey, F. Coleman, Cooper J. G. Pratt

Frontispiece

facing page

Hubert Pearce calling a pack of Zener cards. The author recording

74

Scene of experiments in long distance pure clairvoyance by Pearce, supervised by Mr. Pratt

74

Mr. Zirkle doing pure telepathy with Miss Ownbey as agent

102

Graphs on pages 124, 125, 137, 138, 141, 159, 160