XXI II, 3. Neue Literatur. 381 



Zeiss' Stund for crystallof^raphic and petro^raphic work (Journ. K. Microsc. 

 Soc. 19üG, pt. 4, p. 489; vgl. Zeiss' Katalog f. Mikroskope u. rnikrosk. 

 Hiifsapparate. 38. Ausg., 1906, p. 50). 



1). Objekttisch. 



Zwiutz, J. , u. Thien, O., Über einen neuen elektrisch-heizbaren Objekt- 

 tisch für Mikroskope (Zentralbl. f. Bakteriol. Abt. 1, Orig. Bd. XLII, 

 1906, H. 2, p. 179; vgl. diese Zeitschr. Bd. XXIII, 1906, p. 332). 



Zeiss' large mechanical stage (Journ. R. Microsc. Soc. 1906, pt. 4, p. 489; 

 vgl. Zeiss' Katalog f. Mikroskope u. rnikrosk. Hilfsapparate. 33. Ausg., 

 1906, p. 36). 



c. Okulare. 



R. a. J. Beck's nevv Form of Ehrlich Eye-piece for counting blood- 

 corpuscles (Journ. R. Microsc. Soc. 1906, pt. 3, p. 362). 



Zeiss' compensating Ocular 4* with Iris Diaphragm (Journ. R. Microsc. 

 Soc. 1906, pt. 4, p. 491). 



d. Beleuchtungsapparate. 



(Fabry, C, a. Buisson, H.,) Use of the cooper hewitt lamp as a source 



of monochromatic light (Journ. R. Microsc. Soc. 1906, pt. 3, p. 315; 



vgl. Compt. Rend Acad. Sc. Paris t CXLIII, 1906, p. 784). 

 Zeiss' centring chromatic Condenser (Journ. R. Microsc. Soc. 1906, pt. 4, 



p. 492; vgl. Zeiss' Katalog f. Mikroskope u. rnikrosk. Hilfsapparate. 



33. Ausg., 1906, p. 31). 



e. Verschiedenes. 



(Barrett, W. F.,) Entoptic vision and the Entoptiscope (Journ. R. Microsc. 

 Soc. 1906, pt. 4, p. 495; vgl. Scient. Proc. R. Dublin Soc. vol. XI, 

 1906, no. 7—8). 



