276 Neue Literatur. XXIX , 2 



c. Okulare. 



(Nelson, E, M.,) Magnifying power of eye-pieces (Journ. R. Microsc. Soc. 



1912, pt. 4, p. 449; vgl. English Mechanic vol. XCV, 1912, p. 591). 

 Leitz' double demonstrating eye-piece (Journ. K. Microsc. Soc. 1912, pt. 4, 



p. 447; vgl. Leitz Katalog 1912). 



d. Mikrometer. 



Stringer, E. B., On a modified form of the lever fine-adjustement, and a 

 simple turn-out device for the sub-stage condenser, with a note of 

 the use of the Bertrand lens (Journ. R. Microsc. Soc. 1912, pt. 3, 

 p. 294-297). 



Baker's new lever fine-adjustement (Journ. R. Microsc. Soc. 1912, pt. 3, 

 p. 347; vgl. C. Baker and Co. Catalogue; Knowledge vol. XXXV, 

 1912, p. 515). 



e. Beleuchtungsapparate. 



Leitz, E. , Die Liliput- Bogenlampe (Deutsche Mechan.-Zeitg. 1912, H. 10, 



p. 103). 

 (Nelson, E. M.,) Methods of illumination (Journ. R. Microsc, Soc. 1912, 



pt. 3, p. 353'; vgl. Journ. Quekett micr. Club, ser. 2, vol. XI, 1911, 



p. 289—298). 



f. Verschiedenes. 



(Leishnian, W. B.,) Correction of errors of refraction for microscope 



work (Journ. R. Microsc. Soc. 1912, pt. 4, p. 449; vgl. British med. 



Journ. 1912, no. 1, p. 123). 

 Rousselet, Old „double-reflecting" microscope (Journ. R. Microsc. Soc. 



1912, pt. 4, p. 445). 

 Ausstellung von optischen Instrumenten und verwandten Apparaten, London 



1912 (Deutsch. Mechan.-Zeitg. 1912, H. 11, p. IIG). 

 Focostat lens (Journ. R. Microsc. Soc. 1912, pt. 4, p. 447; vgl. Leitz 



Katalog 1912). 



