Abstract
COLOUR-BLINDNESS has now passed from the category of ailments denominated interesting, and is recognized as a visual infirmity the importance of which cannot be over estimated. Before entering upon a discussion of the subject it will be well to lay down a
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BICKERTON, T. Colour-blindness Generally Considered. Nature 44, 595–597 (1891). https://doi.org/10.1038/044595a0
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DOI: https://doi.org/10.1038/044595a0