I, 4. Neue Literatur. 615 



b. Objectiv. 

 Bradbnry, W., Papers relative to the theory of the object-glass (Engl. Mechan. 



vol. XXXIX, 1884, p. 420). 

 Bradbury, W., The achromatic object-glass. 32—35 (1. c. p. 93, 159, 246, 272). 

 (Carpenter, W. B.), Correction-adjustment for homogeneous-immersioa ob- 



jectives (Journ. R. Microsc. Soc. Ser. II vol. IV, 1884, pt. 4 p. 620). 

 (Sinitb, J. E.), High-angled objectives (1. c. pt. 3 p. 450). 

 Endomersion objectives (1. c. pt. 4 p. 616; cfr. diese Zeitschr. Bd. I, 1884, 



p. 485). 

 Selection of a series of objectives (Journ. R. Microsc. Soc. Ser. 11 vol. IV, 



1884, pt. 3 p. 445; cfr. Microsc. News vol. IV, 1884, no. 43 p. 181). 

 Theory of the achromatic object-glass (Engl. Mechan. vol. XXXEK, 1884, 



p. 210). 

 Zeiss A* variable objective and „optical tube-length" (Journ. R. Microsc. Soc. 



Ser. n vol. IV, 1884, pt. 3 p. 450). 



c. Ocular. 



Bausch, E., Eye-pieces and objectives (The Microscope vol. IV, 1884, p. 107). 

 Geiffith's multiple eye-piece (Journ. R. Microsc. Soc. Ser. II vol. IV, 1884, 



pt. 3 p. 443). 

 Waed's eye-shade (1. c. pt. 4 p. 615; cfr. Amer. Monthly Microsc. Journ. vol. V, 



1884. p. 82). 



d. Tubus. 



Bulloch, W. H., The „Congress" nose-piece (Amer. Monthly Microsc. Journ. 



vol. V, 1884, no. 6 p. 119). 

 Geneva Co.'s nose-piece adapters. Tin ky adapters (Journ. R. Microsc. Soc. 



Ser. n vol. IV, 1884, pt. 3 p. 445). 

 Objective changers (Microsc. News, vol. IV, 1884, no. 44 p. 218). 



e. Beleuchtungsapparate. 



Bausch. E., A new condenser (The Microscope vol. IV, 1884, p. 105; cfr. 

 Journ. R. Älicrosc. Soc. Ser. II vol. IV, 1884, pt. 4 p. 623). 



Lighton, W., Immersion Illuminator (Amer. Monthly Microsc. Journ. vol. V, 

 1884, no. 6, p. 102. — cfr. Journ. R. Microsc. Soc. Ser. II vol. IV, 1884, 

 pt. 4 p. 621). [Eine versilberte, y^ Zoll dicke Glasplatte wird durch 

 Ghjcerin oder eine Flüssigkeit für homogene Immersion an die Unter- 

 seite des Objectträgers unter das Object, die Silberseite nach unten, fixirt 

 und durch einen oberhalb des Tisches befindlichen Spiegel oder Conden- 

 sor mit auf das Object zu reflectirendem Lichte versehen]. 



Moore, J. A., Paraboloid as an illuminator for homogeneous-immersion ob- 



