Abstract
THE letter of Mr. Arnulph Mallock (NATURE, vol. xiv. p. 350) has very much interested me, having recently found that my vision is an exception to that of other persons whom I have tested in the matter.
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WARD, I. Visual Phenomena. Nature 14, 423 (1876). https://doi.org/10.1038/014423c0
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DOI: https://doi.org/10.1038/014423c0
