[Chap. 194.] 
An Act relative to the employment by Railroad Companies of persons 
affected with Defective Sight or Color Blindness. 
Be it enacted, &c., as follows: 
Sect. 1. No railroad company shall employ or keep in its employment 
any person in a position which requires him to distinguish form or color 
signals, unless such person within two years next preceding has been ex- 
amined for color blindness or other defective sight, by some competent 
person employed and paid by' the railroad company, and has received a cer- 
tificate that he is not disqualified for such position by color blindness or 
other defective sight. Every railroad company shall require such 
to be re-examined at least once within every two years, at the expense of 
the railroad company. 
Sect. 2. A railroad company shall be liable to a fine of one hundred 
dollars for each violation of the preceding section. 
Sect. 3. This act shall take effect on the first day of July' next, [Ap- 
proved April 11, 1881, Boston, Massachusetts.