Dangers from color-blindness in railroad employés and pilots / by B. Joy Jeffries.

  • Jeffries, B. Joy (Benjamin Joy), 1833-1915.
Date:
1878
Catalogue details

Licence: Public Domain Mark

Credit: Dangers from color-blindness in railroad employés and pilots / by B. Joy Jeffries. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    V SS vssc- s * c cr V ^ jr. e z yi 's t &'Z &<7 . r-p ^ L—?S f5 ^/cdtou/ Sftieef, S&cafcn, ^^faaa., ^'.c^ftJ^f [From the Ninth Annual Report of the State Board of Health.] DANGERS FROM B. JOY JEFFRIES, A.M., M.D. (Harvard), Fellow Massachusetts Medical Society; Ophthalmic Surgeon Massachusetts Charitable Eye and Ear Infirmary, Carney Hospital, and New-England Hospital for Women and Children ; Member International Periodic Congress of Ophthalmology, American Ophthalmological Society, etc. BOSTON; Eanto, 3bn:tJ, & &0., printers to tfje Cammonfocaltfj, 117 Franklin Street. 1878.