INDEX SLIP. 
Arney (Capt.) W. de W.—The Sensitiveness of the Retina to Light and 
Colour. 
Phil. Trans., A, 1897, vol. 190, pp. 155-193. 
Colour, Sensitiveness of Retina to; Extinction dependent on Angular 
Aperture of Image; Relation of Colour Fields to Intensity of Colour. 
Abney, W. de W. Phil. Trans., A, 1897, vol. 190, pp. 155-193. 
Light, Sensitiveness of Retina to; Apparatus for Reducing Intensity of; 
for Observing Feeble Intensities. 
Abney, W. de W. Phil. Trans,, A, 1897, vol. 190, pp. 155-193. 
Retina, Sensitiveness to Light and Colour; with varying sizes of Image ; 
of different parts of. 
Abney, W. de W. Phil. Trans,, A, 1897, vol. 190, pp. 155-193. 
