276 Neue Literatur. XI, 2. 



0. Miki'ometerschraiibe. 



(Schroeder, H.,) Production of exact micrometer-screws (Journ. R, Microsc. 



Soc. 1894 pt. 2 p. 252). 

 Leitz's micrometer screw adjustment (Journ. R. Microsc. Soc. 1894 pt. 1 p. 109). 



d. Beleuchtungsapparate. 



Gifford, J. W., Au inexpensive screen for monochromatic light (Journ. R, 

 Microsc. Soc. 1894 pt. 2 p. 164). 



e. Verschiedenes. 



Kerber, A., üeber die Aufhebung des secundären Spectrums durch Compen- 



sationslinsen (Centralzeitg. f. Opt. u. Mechan. Bd. XIV, 1893, p. 145; vgl. 



Zeitschr. f. Instrumentenk. Bd. XIV, 1893, H. 4 p. 144). 

 Nelson, E. M., Construction of silvered lens mirrors (Journ. R. Microsc. Soc. 



1894 pt. 2 p. 254). 

 (Strehl, K.,) Theoretical limit to the capacity of the microscope (Journ. R. 



Microsc. Soc. 1894 pt. 2 p. 263; vgl. Centralzeitg. f. Opt. u. Mechan. Bd. XIV, 



1893, p. 277). 

 (Weber, L.,) Chromatic aberration of lenses (Journ. R. Microsc. Soc. 1894 



pt. 1 p. 116; vgl. Centralzeitg. f. Opt. u. Mechan. Bd. XIV, 1893, p. 241). 



3. Mikrophotograpliie. 



(Atkinson, G. F.,) Photographing plate cultivations (Journ. R. Microsc. Soc. 



1894 pt. 2 p. 263; vgl. Botan. Gaz. vol. XVIII, 1893, p. 333). 

 (Bordon, W. C.,) Stereoscopic photomicrography (Journ. R. Microsc. Soc. 1894 



pt. 2 p. 262; vgl. Amer. Monthly Microsc. Journ, vol. XIV, 1893, p. 329). 

 (Köhler, A.,) New method of Illumination for photomicrographical purposes 



(Journ. R. Microsc. Soc. 1894 pt. 2 p. 261 ; vgl. diese Zeitschr. Bd. X, 1893, 



p. 433). 

 (Marktanner-Turneretscher, G.,) On instantaneous photomicrography (Journ. 



R. Microsc. Soc. 1894 pt. 1 p. 110; vgl. Amer. Ann. of Photogr. 1894 p. 245). 

 (Monpillard,) Orthochromatism apphed to photomicrography (Journ. R. Microsc. 



Soc. 1894 pt. 1 p. 113; vgl. Anthony's Photogr. Bull. vol. XXIV, 1893, 



p. 608). 

 Leitz's photomicrographic apparatus (Journ. R. Microsc. Soc. 1894 pt. 1 p. 109). 



