VII, 4, ■ Neue Literatur. 555 



Kerber, A. , lieber die Beseitigung der chromatiscben Differenz der sphäri- 

 schen Aberration in Mikroskopsystemen (Centralzeitg. f. Opt. u. Mechan. 

 Bd. XI, 1890, No. 19 p. 217). 



Martenson, J., Die Mikroskope von Carl Zeiss in Jena. Zugleich eine Ueber- 

 sicht über die SOOjährige Geschichte des Mikroskops (Pharmac. Zeitschr. 

 f. Russland Bd. XXXIX, 1890, p. 145, 161, 177, 193). 



Diffiraction rings and diffraction spectra (Journ. R. Microsc. Soc. 1890 pt. 4 

 p. 521). 



Les appareils de micrographie ä l'exposition du Congres International de Me- 

 decine de Berlin (Ann. de Microgr. t. III, 1890, no. 1 p. 32). 



3. Mikrophotographie. 



Comber, Th. , On a simple form of heliostat, and its application to iihoto- 



micrography (Journ. R. Microsc. Soc. 1890 pt. 4 p. 429). 

 (Hitchcock, R.), The coloured screen in photomicrography (Journ. R. Microsc. 



Soc. 1890 pt, 4 p. 520; cfr. Amer. Monthly Microsc. Journ. vol. XI, 



1890, p. 8). 

 Lumlere, A. et L. , Sur un procede de tirage de microphotographies desti- 



nees ä la projection (Bull. Soc. Frang. de Photogr. 2e ser. t. VI, 1890, 



no. 9 p. 274). 

 (Neiihauss, R.)j Position of the light-filter in photomicrography (Journ. R. 



Microsc. Soc. 1890 pt. 5 p. 669; cfr. diese Zeitschr. Bd. VII, 1890, p. 20). 

 Piersol, G., Some experiences in photomicrography (Amer. Ann. of. Photogr. 



1890; cfr. Journ. R. Microsc. Soc. 1890 pt. 4 p. 516). 

 Pringle , A. , Practical photomicrography by the latest methods. New York 



1890. 192 pp. 8". w. 7 pltes. 

 (Sternberg, G. M.), Photomicrography by gaslight (Journ. R. Microsc. Soc. 



1890 pt. 5 p. 667; cfr. Circ. John Hopckins Univ. vol. IX, 1890, p. 72). 

 Pringle's photomicrographic apparatus (Journ. R. Microsc. Soc. 1890 pt. 5 p. 666). 



4. Mikroskopisches Präparat. 



a. Apparate zum Präparireii. 



Braatz, E., Eine neue Vorrichtung zur Cultur von Anaeroben im hängenden 



Tropfen (Centralbl. f. Bacteriol. u. Parasitenk. Bd. VIII, 1890, No. 17 p. 544). 

 (Elliott, A. S.), A simple turn-table (Journ. R. Microsc. Soc. 1890 pt. 5 



p. 665; cfr. Amor. Monthly Microsc. Journ. vol. XI, 1890, p. 117). 

 (Hernian, M.), Apparatus for impregnating tissues, etc., and for making Es- 



jiAKCH tubes (Journ. R. Microsc. Soc. 1890 pt. 5 p. 675; cfr. Centralbl. f. 



Bacteriol. und Parasitenk. Bd. VII, 1890, p. 55; diese Zeitschr. Bd. VII, 



1890, p. 77). 



