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Title: Color Blindness its dangers and its detection. Some illustrations. RARE manuscript.Full of fascinating medical knowledge that was cutting edge at the time; some is still accepted medical practice and some is hilariously outdated.Color-Blindness: Its Dangers and Its Detection (1879) by B. Joy Jeffries is an early systematic study of color blindness that highlights why this visual defect matters and how it can be identified, especially in occupations where color perception is critical. Jeffries explains the nature of color vision deficiency, reviews its dangers—such as misreading colored signals in railroads and maritime settings—and emphasizes the need for routine testing to prevent accidents. The book describes methods for detecting color blindness, discusses its prevalence and causes, and advocates for greater awareness and practical screening to protect public safety and inform both clinicians and employers about this often overlooked condition.
Author: B Joy Jeffries
Pub date:1879, likely unstated first edition
Features: Hardcover, 312 pages. Measures 5 x 8 x 1.5"
Condition: Please see detailed pictures. GOOD to FAIR condition. Covers are firmly attached, with fading and a stain on the front top corner. Writing on the spine with library information.Cover corners and spine edges with bumping. Notable bumping at top and bottom of spine. Binding tight and together. The title page has been repaired with tape on the reverse side. No notable secondary writing or underlining in text. Ex-library with plate on the inner cover, Harvard medical school. Stamp on title page. Back page missing (last picture).
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