552 Neue Literatur. VllI, 4. 



Neue Literatur. 



1. Lehr- und Handbücher. 



Gage, S. H., The microscope and histology for the use of laboratory students 

 in the anatomical department of Cornell University. Pt. I. The micro- 

 scope and microscopical methods. Ithaca, 1891, 90 pp. 8". w. 40 figs. 



Mascart, E., Trait^ d'optique II. Paris (Gauthier- Villars) 1891. 643 pp. 8". 



2. Mikroskop und mikroskopische Apparate. 



a. Neue Mikroskope. 



(Czapski, S.,) Zeiss's crystallographic and petrographical microscopes (Journ. 



R. Microsc. Soc. 1891 pt. 4 p. 516; cfr. Zeitschr. f. Instrumentenk. Bd. XI, 



1891, p.94; diese Zeitschr. Bd. VIII, 1891, p. 330). 

 (Seaman, W. H.,) A College microscope (Journ. R. Microsc. Soc. 1891 pt. 5 



p. 649 ; cfr. Proceed. Amer. Soc. Microscopists vol. XII, 1891, p. 67). 

 Wyrouboff, G., Sur un nouveau microscope propre aux observations ä haute 



temperature (Bull, de la Soc. fran^. de Mineral, t. XIV, 1891, p. 198; cfr. 



diese Zeitschr. Bd. VIII, 1891, p. 495). 

 Backer's student's microscope (Journ. R. Microsc. Soc. 1891 pt. 4 p. 516). 

 Johnson and Suns' advanccd student's microscope (Journ. R. Microsc. Soc. 1891 



pt. 5 p. 648). 



h. Objectiv. 



Brun, J., Note sur les lentilles semi-apochromatiques (Journ. de Microgr. 

 t. XV, 1891, no. 8 p. 247). 



(Leroy, C. J. A.,) Proof of a simple rclation between the resolving power of 

 an aplanatic objective of the microscope and the diflfraction of the finest 

 grating which an objective can resolve (Journ. R. Microsc. Soc. 1891 pt. 5 

 p. 665; cfr. Centralzeitg. f. Opt. u. Mechan. Bd. XII, 1891, p. 152). 



Schulze, A., The new apochromatic micro-objectives and compensating oculars 

 of Carl Zkiss (Proceed. and Transact. Nat. Hist. Society Glasgow. New. 

 Ser. vol. II, 1890, p. 154). 



