132 Neue Literatur. IX, 1. 



Seaman, W. H., A College microscope (Proceed. Amer. Soc. Microscopists 



1890, vol. XII, 1891, p. 67). 

 Beck's bacteriological „Star" microscope (Journ. R. Microsc. Soc. 1891 pt. G 



p. 806). 

 Giant projection microscope (Journ. R. Microsc. Soc. 1891 pt. 6 p. 806; cfr. 



Centralzeitg. f. Opt. u. Mechan. Bd. XII, 1891, p. 178). 



b. Objectiv. 



Blackliani, G. E., Mesure de l'ouvertare et de la distance frontale des 

 objectifs (Journ. de Microgr. t. XV, 1891, No. 9 p. 277). 



Biirrlll, T. J., Microscope objectives (Proceed. Amer. Soc. Microscopists 1890. 

 vol. XII, 1891, p. 35). 



c. Beleuclitiingsapparate. 



Cimbal, Ueber eine neuere Beleuchtungsart mikroskopischer Präparate (25. Ber. 



d. wiss. Gesellsch. Philomathie in Neisse 1888—90 p. 381). 

 (Seile, Gr.,) Microscope mirror for illumination by reflected light (Journ. R. 



Microsc. Soc. 1891 pt. 6 p. 810; cfr. Centralzeitg. f. Opt. u. Mechan. 



Bd. XII, 1891, p. 239). 



(1. Camera lucida. 



(Ediiiger, L.,) New apparatus for drawing low magnifications (Journ. R. 



Microsc. Soc. 1891 pt. 6 p. 811; cfr. diese Zeitschr. Bd. VIII, 1891, p. 179). 

 Sendall, W., On an improved method of making microscopical measurements 



with the camera lucida (Journ. R. Microsc. Soc. 1891 pt. 6 p. 705). 



e. Polarisationsaijparate. 



(Thompson, S. P.,) New i^olarizer (Journ. R. Microsc. Soc. 1891 pt. 6 p. 810; 

 cfr. Engl. Mechan. vol. LIV, 1891, p. 36). 



f. Verschiedenes. 



(Czapski, S.,) Die voraussichtlichen Grenzen der Leistungsfähigkeit des 



Mikroskops (Biol. Centralbl. Bd. XI, 1891, No. 20 p. 609; cfr. diese 



Zeitschr. Bd. VIII, 1891, p. 145). 

 (Czapski, S.,) Probable limits to the capacity of the microscope (Journ. R. 



Microsc. Soc. 1891 pt. 6 p.814; cfr. diese Zeitschr. Bd. VIII, 1891, p. 145). 

 (Saccardo, P. A.,) Eustachi«) Divini's Compound microscope (Journ. R. 



Microsc. Soc. 1891 pt. 6 p. 808; cfr. Atti del R. Istituto Veneto delle Sc. 



ser. 2, vol. VII, 1891, p. 817). 



