II, 2. Neue Literatur. 277 



i. Varia. 



Eradbury, W. , The achromatic objectglass 26—43 (Engl. Mechan. vol. XL, 



1884, p. 232, 277, 294, 314, 334, 358, 401, 445). 

 Errera, L., Deux questions de terminologie (BuU. Soc. Beige de Microsc. 



t. X, 1884, p. 217, t. XI, 1885, p. 36). 

 Exner, S., Ein Mikro-Refractometer (Arch. . mikrosk. Auat. Bd. XXV, 1885, 



p. 97). 

 f rancotte. F., Expose succinct de la theorie de la formation des images nii- 



croscopiques, d'apres Abbe (Bull. Soc. Beige de Microsc. t. XI, 1885, no. IV 



p. 108). 

 Fritscli, Optical phenomena (Nature vol. XXXI, 1885, p. 212). 

 Guebhardt, A., Elementare Erklärung der Untersuchungen von Gauss und 



Lisxi.NG über die Cardinalpunkte der centrirten dioptrischen Systeme; 



übers, v. Fischeu (Centralzeitg. f. Opt. u. Mechan. Bd. VI, 1885, no. 1 



p. 4, no. 2 p. 13). 

 Gundlach, E., Aperture and working distance (The Microscope vol. IV, 1884, 



p. 246). 

 Haycraft, J. B., A model lens for use in class demonstrations (Nature 



\ol. XXX, 1884, p. 543). 

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 Kingsley, J. S., Workers and their instruments (Sei. Record vol. II, 1884, 



p. 261). 

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vol. IV, 1885, p. 22). 

 Lumiuer, O., Ueber eine Interferenzerscheinung an planparallelen Glasplatten 



und eine neue Methode, die Planparallelität solcher Gläser zu prüfen (Ann. 



der Phys. v. Wiedkmanx, Bd. IX, 1884, p. 49; cfr. Zeitschr. f. Instru- 



mentenk. Bd. V, 1885, H. 1 p. 23). 

 Penny, W. G., On the correction of colour aberration when lenses are in 



contact (Engl. Mechan. vol. XL, 1885, p. 474). 

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3. Mikrophotographie. 



€ox, J. D., On some photographs of broken Diatom valves, taken by lamp- 

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3Iiller, M. N., Photographing Diatoms and difiraction gratings (Engl. Mechan. 

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Thurston, E., Staining Bacteria for microphotographic purposes (I.e. vol. XL, 



1884, p. 335). 



Vorce, €• M,, Photographic methods (Amer. Monthly Microsc. Journ. vol. VI, 



1885, no. 1 p. 13). 



