XXIII, 1. Neue Literatur. 131 



d. Lupen. 



Berger, Emilie, Note sur un examen comparatif des loupes Bruecke, 



Jackson et Berger (Compt. rend. Soc. Biol. t. LX, no. 2, p. 63 — 64). 

 (Vollbehr, O.,) Micropbotoscope or military staif map loup (Journ. R. 



Microsc. Soc. 1905, pt. 5, p. 642; vgl. Kriegstechn. Zeitschr. 1905, No. 1; 



Zeitschr. f. Instrumentenkde. Bd. XXV, 1905, p. 117; Zentralzeitg'. f. 



Opt. u. Mech. Bd. XXVI, 1905, p. 106). 



e. Beleuchtungs- und Zeichenapparate. 



(Paul, R. W.,) Optical Are Lamps (Journ. R. Microsc. Soc. 1905, pt. 5, 

 p. 646; vgl. Catal. Optical Convention 1905, p. 198). 



(Paul, R. W.,) Locke's high power Jet (Journ. R. Microsc. Soc. 1905, 

 pt. 5, p. 647 ; vgl. Catal. Optical Convention 1905, p. 198). 



Abbe Camera lucida (Journ. R. Microsc. Soc. 1905, pt. 6, p. 752). 



Beck's parabolic Illuminator (Journ. R. Microsc. Soc. 1905, pt. 6, p. 753). 



Beck's parabolic Illuminator with Sorby's Reflector (Journ. R. Microsc. 

 Soc. 1905, pt. 6, p. 753). 



f. Ultramikroskop. 



Gemelli, A., Le particelle ultramicroscopiche. Riv. sintetica. Riv. di fisica, 

 mat. e sc. nat. (Pavia), Anno V, 1905, no. 71, p. 397 — 404. 



Leitz' Apparatus for Observation of Ultra-microscopical Particles (Journ. 

 R. Microsc. Soc. 1905, pt, 4, p. 502 ; vgl. Leitz' Katalog 1905, No. 41, 

 p. 80). 



g. Verschiedenes. 



Braun, F., Optische Doppelbrechung in isotropen, geschichteten Medien 

 (Ann. d, Phys. Bd. XVII, 1905, p. 364—366). 



Czapski, S., Die Methoden zur empirischen Bestimmung optischer Instru- 

 mente (Winkelmanns Handbuch der Physik, 2. Aufl., Bd. VI, 1906, 

 p. 433—471). 



9* 



