308 Report of the Committee on Colour -Vision. 



in colour. If they did, it would be discovered during- their 

 apprenticeship. 



(By Dr. Pole) : I do not know of any other railway using 

 blue instead of green glass. I do know whether they use pure 

 green. I have remarked that some glasses are bluer than others. 

 We call them a better green. They are blue in daylight, but not 

 by night. f 



( The Witness then withdrew.') 



Evidence of Mr. Wadden, of the London and South Western 



Eailway. 



The men entering the service of our Company are tested 

 when they first enter, and again when they are promoted to 

 be firemen, and every second year after that; and if during 

 one of these biennial periods a man is promoted to driver, he 

 is specially tested then. In the traffic department, every man 

 is tested upon entering the service. They are tested in this way. 

 I have brought the material in actual use for the purpose. These 

 wools [the wools consisted of browns, drabs, sombre greens, one 

 brighter green, and nondescript colours of very lowtone] are placed 

 upon a horizontal rod promiscuously, and the man asked to pick 

 out three or four reds, blues, or greens, and if he makes an error in 

 one of these, he is tested again with other colours. A man may 

 have a good notion of colours, and not know what to call them. 

 We do not find they mistake red for green. In addition to this 

 test for the traffic department, in the locomotive department there 

 is a night test. The room is darkened, and a box is fitted with a 

 lamp at the back, and various coloured glasses are put in front, 

 commencing with a small disc, perhaps the size of a pin's head, 

 and gradually increasing till we get to one the size of a sixpence, 

 the man being asked what colour he thinks is being shown to 

 him. He is ten or twelve feet from the lantern. The smallest 

 disc is the size of a pin's head, about one-eighth of an inch, or 

 hardly as much, perhaps. We find the men are not so ready 

 with the night test : they are more accustomed to colours by 

 daylight, and find it easier in daylight to distinguish the colours 

 than at night. These colours (wools) were provided by our 

 storekeeper. I am not prepared to say under whose instruction. 



Mr. Brudenell Carter : Among these there is not a single 

 red. I should say they were selected by a colour-blind person ! 



Capt. Abnet : I am not colour-blind, but I should not know 

 what to call some of these. 



The Witness : Our locomotive foreman says many men fail in 

 green who do not in red. I am told some men looked at that 

 (green) and called it red. A further test is sometimes tried by 

 sending men to the Ophthalmic Hospital, where there is a doubt, 

 and I have been told that the hospital authorities confirmed our 

 examination. This wool test is what we call the daylight test, 



