Color-blindness : its dangers and its detection / by B. Joy Jeffries.

  • Benjamin Joy Jeffries
Date:
1879
Catalogue details

Licence: Public Domain Mark

Credit: Color-blindness : its dangers and its detection / by B. Joy Jeffries. Source: Wellcome Collection.

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    the Dombes et Sud-Est and the Midi roads as car- rying out this test. In ] 877 the director-general of the Holland rail- roads called npon Professor Bonders of Utrecht to carry out the examination of the employes for color-blindness. This was done, and the results I have already given. Professor Donders drew up the instructions for the guidance of the twelve surgeons deputed to carry out the details of the first examination, and a final official report was sent in to the director-general. I have received from Professor Donders the printed blank required hereafter to be filled out in the case of every railroad employ^. Every candidate for service must pass an examination by one of five ophthalmic surgeons in Amsterdam, Eotterdam, Anheim, Utrecht, and Ley den. These surgeons' names and hours for examinations are printed on the back of the blank, the face of which reads as follows: — Netherlands Railroad Compant. — The undersigned states that the sight of is sufficient (a) for the employ- ment of engineer or fireman; (b) for the employment of station-master or those who may fill his place, assistants, haltmaster, director, first conductor, conductor, porter, brake- man, switchman, ranker, bridgekeeper, linekeeper, or line- keeperess. The Ophthalmic Surgeon. The 187 . (Signature of the examined to be given in the presence of the surgeon.) N.B.—In case the candidate desires employment under a, & is to be stricken out, and the reverse. There is required, for a, eyes and eyelids healthy exter- nally, without habitual congestion or inflammation; field of vision, not limited in either eye; acuteness of vision, nor-