192 COLOUR VISION 



A. v. Hippel. Festschrift, Halle, 1894 : Benefit, d. Ophth. Gesellschf. Heidelberg, 150, 

 1898. 



Hess and Hering. Arch. f. d. ges. Physiol. LXXI. 105, 1898. 



Pfliiger. Bericht. d. Ophth. Gesellschf. Heidelberg, 166, 1898 ; Internal. Congress, 

 Moscow, 315, 1898. 



Fukala. Klin. Monatsbl. f. Augenhlk. xxxvi. 175, 1898. 



Uhthoff. Bericht. d. Ophth. Gesellschf. Heidelberg, 158, 1898; Ztsch. f. Psychol. u. 

 Physiol. d. Sinnesorg. xx. 326, 1899 ; xxvn. 344, 1902. 



Hess. Arch. f. Ophth. LI. 225. 1900 ; Ztsch. f. Psychol. u. Physiol. d. Sinnesorg. xxix. 

 99, 1902. 



Abney. Proc. Roy. Soc. Land. LXVI. 179, 1900. 



Nagel. Arch. f. Ophth. XLIV. 153, 1901. 



Pergens. Klin. Monalsbl. f. Augenhlk. XL. 2, 46, 1902. 



Grunert. Arch. f. Ophth. LVI. 1, 132, 1903. 



Wehrli. In Nagel's Jahresbericht f. Ophth. xxxiv. 92, 1903. 



Bjerrum. Hospitalstidende, 1145, 1904. 



Piper. Ztsch. f. Psychol. u. Physiol. d. Sinnesorg. xxxvrn, 155, 1905. 



Ronne. Klin. Monatsbl. f. Augenhlk. XLIV. Beilageheft, 193, 1906. 



Nettleship and Holmes Spicer. Trans. Ophth. Soc. xxvni. 83, 1908. 



Nettleship. Trans. Ophth. Soc. xxix. cxci, 1909. 



Hessberg. Klin. Monatsbl. f. Augenhlk. XLvn. 2, 129, 1909. 



Kollner. Ztsch. f. Sinnesphysiol. XLIII. 409, 1909. 



Juler. Ophth. Rev. 65, 1910. 



Gertz. Arch.f. Augenhlk. LXX. 202, 228, 1911. 



