Hypnotism, its facts, theories and related phenomena, with explanatory anecdotes (1900)
Sextus, Carl · Boston, D. Estes & company · leaf 21
POLISHED HORN WITH GLASSPRISM IN THE CENTER. ZINC BUTTON WITH A COP-PER WIRE THROUGH THECENTER. The subject is requested to gaze continually and intently on thecrystal prism, and not to undertake any motions whatever, keep-ing the same position in which I place him, and to fix his wholeattention on…
Hypnotism
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