Wülfing. Mallock. Sandoz. Litteratur. 151 A. S. Mobton. Refraction of the eye: its diagnosis and the cor- rection of its errors. 5. ed. 80 S. London, Lewis, 1894. G. Hartridge. Refraction of the eye. A manual for students. 7. ed. London, Churchill, 1894. E. Rychneb. Eine neue Methode der Refractionsbestimmung im umgekehrten Bilde. Inaug.-Diss. 33 S. Zürich 1894. M. Tscherning. Etudes sur le mechanisme de l’accommodation. Arch. de physiol. (5) 6, 40—52, 1894. A. Charpentier. Retinal oscillations. Boy. Soc. London, June 7, 1894. [Nature 50, 466—468, 1894. A. K.