Ij 2. Neue Literatur. 313 



Beck's pathological microscope (Journ. R. Microsc. Soc. Ser. II vol. III, 1883, 



pt. 6 p. 894). 

 McLaeen's microscope with rotatiug foot (1. c. Ser. II vol. IV, 1884, pt. 1 



p. 111). 

 Mikand's rcvolver microscope (1. c. Ser. IL vol. III, 1883, pt. 6 p. 897). 

 Pelletan's „Continental" microscope (1. c. p. 899). 

 Schieck's revolver school and drawing-room microscope. Wintek's and Harris's 



revolver microscopes (1. c. Ser. II vol. IV, 1884, pt. 1 p. 112). 

 Swift and Son's pocket microscope (1. c. Ser. II vol. III, 1883, pt. 6 p. 896). 

 The improved „biological" stand (Amer. Monthly Microsc. Joiurn. vol. V, 1884, 



no. 1 p. 9). 

 Zeiss's mineralogical microscope (Journ. R. Microsc. Soc. Ser. II vol. III, 1883, 



pt. 6 p. 900). 



b. Objectiv. 



Abbe, E. , The relation of aperture and power in the microscope. II. The rat- 

 ional balance of aperture and power. 2. Division of the entire power of the 

 microscope between ocular and objective (Journ. R. Microsc. Soc. Ser. II 

 vol. III, 1883, pt. 6 p. 790). 



Abbe, E., On the mode of vision with objectives of wide aperture (1. c. Ser. II 

 vol. IV, 1884, pt. 1 p. 20). 



Blackham, G. E., The relation of aperture to amplification in the selection 

 of a series of microscope objectives (Proceed. Amer. Soc. Microscopists. 

 ßth ann. meet. p. 33). 



Bradbury, W., The achromatic object-glass. 19. (Engl. Mechan. vol. XXXVIII, 

 1883, p. 258). 



Crisp, F., On „oplical tube-length" ; an unconsidered element in the theory 

 of the microscope (Journ. R. Microsc. Soc. Ser. II vol. III, 1883, pt. 6 

 p. 816; cfr. Microsc. News vol. IV, 1884, no. 37 p. 14). 



Ollard, W. G., Doublets for the microscope (Engl. Mechan. vol. XXXVUI, 



1883, p. 223). 



Rogers, W. A., Corrections to paper on the „Conditions of success in the 

 construction and comparison of Standards of length" (Proceed. Amer. Soc. 

 Microscopists. 6 '' ann. meet. p. 240). 



T. T. , Relation of aperture to power in microscope object-glasses (1. c. 



1884, p. 410). 



Optical tube-length and magnification (Amer. Monthly Microsc. Joiu-n. vol. V, 



1884, no. 2 p. 21). 

 Testing a microscope (1. c. no. 1 p. 7). 



c. Ocular. 



Bradbury, W,, On eye-pieces (Engl. Mechan. vol. XXXVIII, 1884, p. 401). 



Penny, W. G., Theory of the eye-piece. I. The dispersion of light. II. Dis- 

 persion of light. Also criticisms by J. A. C. ÜI. Spherical aberration 

 (1. c. vol. XXXVIII, 1883, p. 283. 367 390). 



