662 



INDEX. 



Willis, Professor, his lectures on prac- 

 tical mechanism attended by Maxwell 

 when a graduate, 220. 

 Wilson, Professor (Christopher North), 

 his Moral Philosophy class 

 attended by Maxwell, 107, 

 114, 127, 128. 

 Maxwell's comment on his 



lectures, 145. 

 Dr. George, Maxwell communicates 



to him results upon colour-blind- 

 ness, 203, 217. 



YOUNG, Dr. T., his triangle of colours, 

 a basis of Maxwell's experiments, 

 467, 472, 473. 

 clearness of his style, 305. 



ZOETROPE, 484. 



THE END. 



Printed by R. & R. CLARK, Edinburgh. 



