VII, 4. Neue Literatur. 555 



Kerber, A. , Ueber die Beseitigung der chromatischen Differenz der sphäri- 

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

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



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

 sicht über die 300jährige Geschichte des Mikroskops (Pharmac. Zeitschr. 

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



Difiraction rings and diffiraction spectra (Journ. R. Microsc. Soc. 1890 pt. 4 

 p. 521). 



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

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



3. Mikrophotographie. 



Comber, Tli. , On a simple form of heliostat, and its application to photo- 



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

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



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



1890, p. 8). 

 Lnniiere, 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). 

 (Neuhauss, H.), Position of the light-filtcr in photomicrography (Journ. R. 



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

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



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

 Pringle , A. , Practical photomicrography by thc latest mcthods. 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 HorcKiNs Univ. vol. IX, 1890, p. 72). 

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



4. Mikroskopisches Präparat. 



a. Api)arate zum Präijariren. 



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. Amer, Monthly Microsc. Journ. vol. XI, 1890, p. 117). 

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



MARCH 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). 



