556 Neue Literatur. XXVII, 4. 



f. • Verschiedenes. 



(Jühannsen, A.,) Simple improvement for a petrographical microscope 



(Journ. li. Microsc. Soc. 1910, pt. 5, p. 643; vgl. Amer. Journ. Sci. 



vol. XXIX, 1910, p. 435). 

 Nelson, E. M., What did our forefathers see in a microscope (Journ. R. 



Microsc. Soc. 1910, pt. 4, p. 427). 

 (Sagnac, G.,) Interferometer, with inverse superposed luminous i-ays giving 



in white polarized light a narrow central fringe of sensible tint and 



narrow coloured fringes at white intervals (Journ. R. Microsc. Soc. 



1910, pt. 5, p. 654; vgl. Compt. Rend. Acad. Sci. Paris t. CL, 1910, 



p. 1676). 

 Toldt, K. jun., Respirationsschirm für das Präpariermikroskop (Verhandl. 



zool.-bot. Ges. Wien, 1910, p. [197]). 

 Old achromatic microscope by ïrécourt and Georges Oberhäuser (Journ. 



R. Microsc. Soc. 1910, pt. 5, p. 640). 

 Old microscope presented by Mr. Albert Ash (Journ. R. Microsc. Soc. 



1910, pt. 5, p. 642). 

 Old microscope presented by Mr. C. F. Rousselet (Journ. R. Microsc. 



Soc. 1910, pt. 5, p. 642). 



3. Mikrophotographie und Projektion. 



Comandon, L'ultramicroscope et la cinematographic (La Presse medic. 



1909, no. 94, p. 841 ; vgl. Zentralbl. f. Bakteriol. Abt. 1, Ref. Bd. XLVIII, 



1910, No. 5, p. 148). 



Gage, H. Ph., Arc lamps for projection (Electr. World 1910, Oct. 13). 

 (Ignatowsky, W. v.,) New Nicol for projection purposes (Journ. R. 



Microsc. Soc. 1910, pt. 5, p. 652; vgl. Zeitschr. f. Instrumentenkde. 



Bd. XXX, 1910, p. 217). 

 (Jullien, J.,) Practical photomicrography (Journ. R. Microsc. Soc. 1910. 



pt. 5, p. 656; vgl. Bull. Soc. Zool. de Genève 1908, p. 101). 

 Völker, A., Quarzglas und Quarzgut (Die Umschau 1910, p. 909; vgl. 



diese Zeitschr. Bd. XXVII, 1910, p. 508j. 

 Quidor-Nachet microscope (Journ. R. Microsc. Soc. 1910, pt. 5, p. 649; 



vgl. Arch. Zool. e.xpér. et gén. 1910, vol. V, p. 67). 



