XIII, 4. Neue Literatur. 545 



b. Ocular. 



(Cowl, W.,) Eye-piece with graduated iris-diaphragm CJourn. R. Microsc. 

 Soc. 189G, pt. 5, p. 560; vgl. Anat. Anz. Bd. XII, 189G, p. 178). 



c. Tisch. 



(Behrens, W.,j Ein neuer mikroskopischer Heiztisch mit Selbstregulirung 

 für constante Temperaturen (Zeitschr. f. Instrumentenk. Bd. XVI, 1896, 

 H. 10, p. 314; vgl. diese Zeitschr. Bd. XII, 1895, p. 1). 



d. Zeichenapparate. 



Merkel, F., Ein neuer Zeichenapparat (Verhandl. d. Anat. Gesellsch. X, 

 Berlin 1896, p. 178). 



e. Spectralapparate. 



Wröblewski , A. , Zastosowanie spektrofotometru GLAx'a do chemü 

 zwierz^cej [Anwendung des GLAx'schen Spectrophotometers auf die 

 Thierchemie] (Anz. d. Acad. d. Wiss. Krakau, 1896, Nov., p. 386). 



f. Verschiedenes. 



Beck, C. , The Royal Microscopical Society's Standard screw-thread for 



nose-pieces and object-glasses of microscopes (Journ. R. Microsc. Soc. 



1896, pt. 4, p. 389). 

 Rheinberg, J. , On an addition to the methods of microscopical research, 



by a new way of optically producing colour-contrast between an 



object and its background, or between definite parts of the object 



itself (Journ. R. Microsc. Soc. 1896, pt. 4, p. 373). 

 Stoney, G. J., Microscopic vision (Philos. Magazine a. Journ. of Sei. 5^^ 



ser., no. 259, vol. XLII, 1896, p. 499). 

 Das Mikroskop (Centralzeitg. f. Opt. u. Mechan. Bd. XVII, 1896, No. 19, 



p. 191; No. 20, p. 201). 



Zeitschr. f. wiss. Mikroskopie. XIII, 4. 35 



