52 COLOUR-SIGHT AND COLOUR-BLINDNESS 



APPENDIX II. 



The following were thrown on the screen during the 

 lecture. 



1— The refraction spectrum — 10 feet long. Arc lamp, and two 

 bisulphide of carbon prisms. 



2 — The diffraction spectrum — 6 feet long. Arc lamp and grating. 



3 — Solar spectrum — diagram. 



4 — The two spectra— refraction and diffraction diagram. 



5 —A comparison of the two spectra. 



6 — Brewster's theory of colour. 



7 — Chromatic circle ; Maxwell's theory. 



8 — Horixontal section of left eye — diagram. 



9 — Vertical section of retina — diagram. 

 10 — Vertical section of retina, photo-micrograph, by Dr. Thomson, 



X 300. 

 1] — 9 and 10 compared. 



12 — Perimetric chart ; Gibson and Kussell ; right eye. 

 13— Perimetric chart ; Brudenell Carter ; left eye. 

 14 — Perimetric chart ; Abney ; for red. 

 15 — Perimetric chart ; Abney ; for green. 

 16 — Carter's perimeter. 

 17 — Young- Helmholz theory — diagram. 

 18— Colour table of Maxwell — diagram. 

 19 — Colour curves of Maxwell — diagram. 

 20 — Colour curves of a dichromatic, after Maxwell. 

 21 — Dr. Magnus' theory of colour sensation. 

 22 — Dr. Edridge Green's theory of colour sensation. 

 23— Dr. Edridge Green's spectra of the colour-blind. 

 24— Likeness of John Dalton from B.M.A., 16/5/03. 

 25 — Table of colour blind. 



26 — Red and green bunting on a white background ; Ilford's ordinary. 

 27 — Red and gieen bunting on a white background ; Ilford's chromatic. 

 23 — Bed and green bunting on a black background; Ilford's ordinary. 

 29 — Red and green bunting on a black background ; Ilford's chromatic. 

 30 — Red light — Experiments with : effects of. 

 31 — Green light — Experiments with : effects of. 

 32 — Blue light — Experiments with : effects of. 

 33 — Heredity of Colour Blindness. 

 34— Stilling's Test Card. 

 35 — Colour Patch Apparatus ; Abney. 

 36— Colour Patch Apparatus; Abney — diagram. 

 37 — London Fundi — red, white, blue. 29/4/03. 



