I, 4. Neue Literatur. 617 



Francotte's camera lucida (Joum. R. Microsc. Soc. Ser. 11 vol. IV, 1884, pt. 3 

 p. 444; cfr. Bulletin Soc. beige de microsc. t. X, 1884, p. 77). 



Schrödek's camera lucida (Amer. Monthly Microsc. Journ. vol. V, 1884, no. 6 

 p. 116). 



h. Mikrometer. 



(Pasoldt, C), Visibility of ruled lines (Journ. R. Microsc. Soc. Ser. II vol. IV, 

 1884, pt. 4 p. 625; cfr. Scientific Amer. vol. XLVIH, 1883, p. 341). 



Micrometry (Microsc. News vol. IV, 1884, no. 44 p. 204). 



Rogee's new eye-piece micrometer (Journ. R. Microsc. Soc. Ser. II vol. IV, 

 1884, pt. 3 p. 445; cfr. Amer. Monthly Microsc. Journ. vol. V, 1884, 

 p. 52). 



i. Varia. 



Abbe, E., Note on the proper definition of the amplifying power of a lens or 



lens-system (Journ. R. Microsc. Soc. Ser. II vol. IV, 1884, pt. 3 p. 348). 

 Abbe, E. , The relation of aperture aud power in the Mcroscope (Microsc. 



News vol. IV, 1884, no. 43 p. 189, no. 44 p. 206, from Journ. R. Microsc. 



Soc). 

 Carpenter, On the physiology of binocular vision with the microscope (Journ. 



R. Microsc. Soc. Ser. H vol. IV, 1884, pt. 3 p. 486). 

 Eternod, Des illusions d'optique dans les observations au microscope (Revue 



med. de la Suisse Romande t. IV cah. 6). 

 (Fripp, H. E.), Extracts from Mr. H. E. Fkipp's translation of Professor Abbe's 



paper on the microscope [cont.] (Microsc. News vol. IV, 1884, no. 42 



p. 142, no. 43 p. 167; from Proceed. Bristol. Naturalists' Soc, New Ser. 



vol. I, pt. 2). 

 Gowen, F. H., Resolution by central light (Amer. Monthly Microsc. Journ. 



vol. V, 1884, no. 6 p. 118). 

 Gowen, F. H., Resolution of Amphipleura (1. c). 

 (Guebbard, H.), üeber die vergrössernde Kraft der dioptischen Instrumente 



(Centralzeitg. f. Opt. u. Mechan. Bd. V, 1884, No. 16 p. 183). 

 Hockin, Ch., On the estimation of aperture in the microscope (Journ. R. 



Microsc. Soc. Ser. II vol. IV, 1884, pt. 3 p. 337). 

 Nelson, E. M., How to work with the microscope (Journ. Queck. Microsc Club 



vol. I, 1884, p. 375). 

 Peaucellier, Note siu: la deformation des Images refractes et sur l'aplana- 



tisme d'un Systeme de lentilles (Mem. de la Soc. des sc. de Bordeaux vol. V, 



1883, p. 327). 



(Slack, H. J.), Horizontal position of the microscope (Journ. R. Microsc. 



Soc. Ser. H vol. IV, 1884, pt. 3 p. 445; cfr. Knowledge vol. V, 1884, 



p. 109). 

 Wassell, A. H., Plate glass for optical pm-poses (Engl. Mechan. vol. XXXIX, 



1884, p. 170). 



