Hypnotism, its facts, theories, and related phenomena; (1893)
Sextus, Carl · Chicago, C. Sextus · leaf 19
POLISHED HORN WITH GLASS ZINC BUTTON WITH A COP-PRISM IN THE CENTER. PER WIRE THROUGH THE CENTER. 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…
Hypnotism
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