584 Neue Literatur. II, 4. 



Ser. II vol. V, 1885, pt. 5, p. 856; cfr. Nachr. v. d. k. Gesellsch. d. 



Wiss. Göttingen, 1884, p. 436, diese Zeitschr. Bd. II, 1885, p. 264). 

 (Ward, ß. H.), The binocular (Microsc. Bull. vol. II, 1885, p. 28; from 



BEnRE-Ni?, The microscope in botany). 

 Double-drum microscope (Journ. R. Microsc. Soc. Ser. 11 vol. V, 1885, pt. 4, 



p. 703). 

 Gray's water microscopes (Engl. Mechan. vol. XLI, 1885, p. 520). 

 Perfect laboratory microscope (Microsc. Bull. vol. II, 1885, p. 25). 

 Portable microscopes (Journ. R. Microsc. Soc. Ser. II, vol. V, 1885, pt. 4 



p. 700). 

 Reicheut's mineralogical-geological microscope (1. c. pt. 5 p. 858). 

 Revolving stage microscope (1. c. pt. 4 p. 699). 



Schieck's microscope with screw stage-micrometer (1. c. pt. 5 p. 861). 

 Theii.er and Son's demonstration microscope (Knowledge vol. VII, 1885, p. 491 ; 



Natura vol. XXXII, 1885, p. 112). 

 TiiEiLER AXD Su.n's uuiversal pocket microscope (Knowledge vol. VII, 1885, p. 



491; cfr. Nature vol. XXXIL 1885, p. 112; Journ. R. Microsc. Soc. Ser. II 



vol. V, 1885, pt. 4 p. 704). 

 Watsok-Wale mici'oscope (Journ. R. Microsc. Soc. Ser. II vol. V, 1885, pt. 5, 



p. 860). 



b. Objectiv. 



Durand, W. F., A practical method of finding the optical centre of an ob- 



jective, and its focal length (Amer. Monthly Microsc. Journ. vol. VI, 1885, 



no. 8 p. 141). 

 (Giindlach, E.), An improvement in objectives (Journ. R. Microsc. Soc. Ser. II 



vol. V, 1885; pt. 4 p. 705; cfr. Proceed. Amer. Soc. Mcroscoiiists, 7"» ann. 



meet. 1884, p. 148). 

 Griindlach, E., The examination of objectives (Microsc. Bull. vol. II. 1885, 



p. 18). 

 Hastings, C. S., On the colour correction of double objectives (Engl. Mechan. 



1885, voU. XLI, p. 559, XLII, p. 8j. 

 Hitchcock, R., Testing objectives (Amer. Monthly. Microsc. Journ. vol. VI, 



1885, no. 9 p. 177). 

 Queen, J. W., Remarks on using oil-immersion objectives (Microsc. Bull. vol. LI, 



1885j p. 22). 

 R. C, The microobjective III, IV, V, VI (Engl. Mechan. vol. XLP, 1885, pp. 



302, 327, 413, 563). 

 (WaleSjW.). Care and use of objectives (Journ. R. Microsc. Soc. Ser. II vol. V, 



1885, pt. 4 p. 708; cfr. Journ. New-York Microsc. Soc. vol. 1. 1885, p. 113). 

 W. M., The magnifying power of an inch objective (Amer. Monthly. Microsc. 



Journ. vol. VI, 1885, no. 11 p. 203). 

 GuNDLAcn's improved objectives (Journ. R. Microsc. Soc. Ser. II vol. V, 1885, 



pt. 5 p. 863; cfr. Amer. Monthly Microsc. Journ. vol. VI, 1885, p. 130). 



