III, 3. Nene Literatur. 443 



3Iayer, A. M., A simple and inexpensive form of black-ground illnminator 



(Journ. New York Microsc. See. vol. II, 1886, p. 28; Journ. R. Microsc. 



Soc. Ser. II vol. VI, 1886, pt. 3 p. 514). 

 Nelson, E. M., Central v. oblique light (Engl. Mechan. vol. XLIII, 1886, 



p. 300; cfr. Journ. R. Microsc. Soc. Ser. II vol. VI, 1886, pt. 4 p. 692). 

 Schnitze, E. A., Electrical illumination for the microscope (Journ. New York 



Microsc. Soc. vol. II, 1886, p. 16). 

 Baker's new microscope lamp (Journ. R. Microsc. Soc. Ser. II vol. VI, 1886 



pt. 4 p. 688). 

 Projection microscopes (1. c. pt. 3 p. 500). 

 Zeiss's monochromatic Illuminator (1. c. p. 515). [Nichts Neues; cfr, Behrens, 



Hilfsbuch, 1883, p. 70]. 



f. Mikrometer. 



Ewell, M. D., Metal micrometers (The Microscope vol. VI, 1886, p. 63; cfr, 



Journ. R. Microsc. Soc. Ser. II vol. VI, 1886, pt. 3 p. 521). 

 Ewell, M. D., On tine measurements (Amer. Monthly Microsc. Journ. vol. VII, 



1886, No. 6 p. 119). 

 (Gill, D.), Method of webbing the filar micrometer (Journ. R. Microsc. Soc. 



Ser. II vol. VI, 1886, pt. 4 p. 684). 

 Deutgen's micrometer-microscope (1. c. p. 673). 

 Winkel's micrometer eye-piece (1. c. p. 683; cfr. diese Zeitschr. Bd. II, 1885, 



p. 41). 



ff. Camera Incida. 



(Giltay, E.), Theory of the camera lucida (Journ. R. Microsc. Soc. Ser. II 

 vol. VI, 1886, pt. 3 p. 516; cfr. diese Zeitschr. Bd. I, 1884, p. 1). 



h. PoIarisation.sapi)arate. 



Ahrens, C. D., New polarizing prism (Journ. R. Microsc. Soc. Ser. II vol. VI, 



1886, pt. 3 p. 397). 

 Thompson, S. P. , Notes on some new polarizing prisms (Philos. Mag. 1886, 



p. 476). 

 (AVichmann, A.) , Use of the microscope with convergent polarized light 



(Journ. R. Microsc. Soc. Ser. II vol. VI, 1886, pt. 3 p. 513; cfr. diese 



Zeitschr. Bd. I, 1884, p. 139.) 

 Amici polai'izing apparatus (Journ. R. Microsc. Soc. Ser. II vol. VI, 1886, pt. 4 



p. 682). 



i. Testobjecte. 



B. L. B., True cause of dotted appearance in P. formosum (Engl. Mechan. 

 vol. XLIII, 1886, p. 300). 



