Jastrow, Joseph, 1863-1944 · Boston, Houghton, Mifflin and Co · leaf 309
to produce the transformation.Viewed at the usual reading distance, we see nothingbut an irregular and meaningless assemblage of blackand white blotches. At a distance of not less thanfifteen to eighteen feet, however, a mans head appears THE MINDS EYE 285 quite clearly. Also observe that after the… … Fig. 6. — This is a highly enlarged reproduction taken from a half-toneprocess print of Lord Kelvin. It appeared in the Photographic Times. geometrical forms or objects. We cultivate such a useof our eyes, as indeed of all our faculties, as will onthe whole lead to the most profitable results. As…
Parapsychology · Occultism · Hypnotism
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