This paper is the result of work done in the laboratory for ophthalmology at the Wills Hospital for the National Brotherhood of Railway Firemen and Enginemen. The study was made in connection with the petition of this body before the Interstate Commerce Commission to compel the installation of automatic stokers on all coal-burning locomotives. This petition applied to all railroad runs whereon it is necessary for the firemen to be on the lookout for track signals, and to all occasions when they (the firemen) are specifically charged with the correct calling of such signals, as to both noting them on time and calling them correctly.
There were some other important factors connected with this petition before the Interstate Commerce Commission, such as economy of operation and the usual fatigue connected with firing by hand, but this paper has to do only with the factor just mentioned.
SPAETH EB. LIGHT ADAPTATION AT THE MACULAAN EXAMPLE OF ITS INDUSTRIAL IMPORTANCE. Arch Ophthalmol. 1937;18(2):248–254. doi:10.1001/archopht.1937.00850080070006
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