-48 COLOUR-SIGHT AND COLOUR-BLINDNESS 



4. Candidates should not be requested or encouraged to 



name colours. 



{a.) The idea of colour testing is to do something and 



to say nothing ; to match skeins not to name 



them. 

 (b.) Colour-ignorance and colour-blindness are two very 



different things. 

 (c.) The ignorance can be corrected. 

 ((I.) The blindness cannot, and it is for the blindness 



only the test has been established. 



5. No candidate should be pronounced colour-blind until he 



has been examined twice or even oftener. 



(«.) I believe a congenital colour-blind person is incur- 

 able. 



(b.) I have tested some of the rejected candidates quite 

 a dozen times. 



(c.) I have had them under tuition. 



(d.) I have had them purchase skeins ; these in a short 

 time they would learn all about and would glibly 

 rattle off their names, but when shown fresh or 

 strange skeins their blindness was as apparent 

 as ever. 



6. No candidate should be pronounced colour-blind unless 



examined before a witness. 



(a.) A colour-blind person when first told of his 



defect does not not understand it and cannot 



believe it. 

 (b.) Neither do his friends, 

 (c.) It is well that his blunders should be witnessed 



by one or more of his own people. 



7. The test and confusion colours should all be numbered, 



so that candidate's mistakes may be recorded for future 



reference. 



(a.) I look upon this as important, although I recog- 

 nise the fact that the colour-blind with every 

 examination vary their selections, so that no two 

 examinations will give the same results. 



