114 Some unpublished Data on Colour Blindness. 



XVI. 94 Carm. + 6 Ult. = 97 Blk.+ 3 Wh. 



XVII. 85Br.gr. +15 Ult. = 90 Blk. + lO Wh. 



XIX. 79 Verm. +21 Wh. = 62Em.gr. + 17Ult. + 21Bk. 



XXI. 93Carm. + 7 Wh. = 84Br. gr. + 9Ult. + 7Bk. 



Mr. Lloyd matched a Red of Chevreul's with No. 18 on 

 the Yellow Gamme. To me it matched at the same time 

 between Nos. 16 and 17. 



For the indication of Dalton's vision see pages 102, 103. 



The Tioo Brothers Carne. 



I. 41 Y. + 59 Ult. = 69 Blk. + 31 Wh. 



IX. 42 Y. + 39 Blk. + 19 W. = 100 Em. gr. 

 X. 7f Y. + 92J Blk. = 100 Verm. 



XIV. 62Em.gr. + 38 Ult. = 65 Blk. + 35 Wh. 

 XV. 90 Verm. +10 Ult. = 95J Blk.+ 4* Wh. 

 XIX. 75 Verm. + 25Wh. = 51J Em.gr. + 23Ult. + 25| Bk. 



Messrs. Carne matched a Red of ChevreuPs with No. 17 of 

 the Yellow Gamme. To me it matched No. 16. 



Mr. Parry. 



I. 40 Y. + 60 Ult. = 60 Blk. + 40 Wh. 



II. 54 Y. + 46 Ult. = 70 Orange + 30 Wh. 



III. 62 Y. + 38 Ult. = 86 Em. gr. + 14 Wh. 



IV. 43 Y. + 57 Ult. =62 Verm. +38 Wh. 

 V. 41 Y. + 59 Ult. =60 Carm. +40 Wh. 



VI. 46 Y. + 54 Ult. =65 Br. gr. +35 Wh. 



VIII. 35 Y. + 65 Wh. =100 Orange. 



IX. 43 Y. + 44 Blk. + 13 Wh.= 100Em.gr. 

 X. 8 Y. + 92 Blk. =100 Verm. 



XI. 3 Y. + 97 Blk. = 100 Carm. 



XII. 15 Y. + 83 Blk. + 2 Wh. =100 Br. gr. 

 XIV. 60Em.gr. + 40 Ult. = 66 Blk. + 33 Wh. 

 XV. 90 Verm. +10 Ult. =92 Blk.+ 8 Wh. 

 XVI. 96^ Carm. + 3i Ult. = 971 Blk.+ 21 Wh. 

 XVII. 84 Br.gr. + 18i Ult. =87 Blk. + 13 Wh. 

 XVIII. 73 Blue verd. + 27 Y. =47J Blk. + 521 Wh. 

 XIX. 68 Ver. + 23J Y. + 8J W. = 68 Em. gr. + 32 Blk. 

 XX. 871 Car. + 10iY. + 2 W. = 88 Br. gr. +12 Blk. 



Mr. Parry matched a Red of Chevreul's with No. 18 of 

 the Yellow Gamme. To me it matched No. 16. He matched 

 a Green of Chevreul's with No. 16 of the same Gamme. To 

 me it matched No. 17. His perceptions of yellow and blue 

 were exceedingly acute, even in the lightest tints. 



