396 Report of the Committee on Colour-Vision. 



Appendix VII. 



Summary of Colour-Blind Cases detected at the examination of 

 about 300 Kailway Employes at Swindon on 22nd June, 1891. 

 Explanation. — The names at the head of the columns are those of the 

 Examiners. Gf — G-reen, R = Bed, indicating the colour-perception which 

 was deficient or entirely absent. The mark — shows that the Examinee was 

 passed by the Examiners. 



Wool Test. 



Lantekn Test. 



Number. 



(a.) 

 Mr.Mellish. 



(b.) 



Capt. 

 Abney. 



(c) 

 Capt. 

 Thompson. 



(d.) 

 Dr.Edridge 

 Green. 



(e.) 

 Mr. Galton. 



(f.) 

 Mr. 

 Nettleship. 



(g.) 



Mr. B. 

 Carter. 



4 



r Gr 



r Gr 









? Gr 





1 o 



1Z 













? R 





41 



R 



? Gr 







? Gr R 



? Gr R 





43 













? R 





49 













? G- 





50 



Gf R 















Gr 



60 



Gf R 





Gf 







G 



Gr 



69 



R 











? Gr R 





82 













? Gr 





88 













? Gr 





98 













? Gr 





122 



Gr 



Gr R 









~~ 





129 













? Gr 





133 













? Gr 





191 









— 







R Gr 



202 













"? Gr 

















r Jtv 





218 













? Gf 





311 













? a 





327 













? a 





543 













R 





556 













? a 





569 













? Gf 





573 













? Gr 





621 













? R 





634 







a 







? Gr R 





641 









t 









642 













? GJ- 





652 



a r 



a 







? Gr 



Gr R 



a 



718 



R 













Gr R 



724 



r a 





r a 





R Gf 





R Gf 



904 



R 





a 









R Gr 



Payne 



r a 



R Gr 



r a 











Hext 



R 



r a 









r a 



R Gf 



Total 

 Number 

 Examined 



138 



88 



101 



8 



66 



78 



8 



(a) This column includes those examined by Mr. Brudenell Carter and Dr. Frost, who 

 also used the Holmgren tests. 



(b) The cases given in this column were detected by Dr. Jeaffreson's ■wool test apparatus. 



(c) Capt. Thompson used the Board of Trade tests— lamp and glasses. 



(d) Dr. Edridge Green's lamp did not arrive at Swindon early enough to enable him to 

 examine more than eight men. 



(e) Mr. Galton used a very convenient lamp of his own design. After the proceedings at 

 Swindon, Mr. Galton wrote. " The wool test is surer than the lantern test and more convenient." 



(/) Mr. Nettleship in transmitting the results of his examination states that the lantern 

 test as he used it " is e /idently quite untrustworthy as a first test, though it may perhaps have 

 value as a test of practical efficiency when the real colour state has already been determined. 1 ' 



(g) This column gives a few cases tested by Mr. Carter with his own pattern lantern 

 after he had finished with the wool test. 



* Called Yellow, red. Bejected. 



t Called Green, blue; and White, red. Rejected. 



