534 iNeue Literatur. 11, 4. 



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



Wiss. Göttingen, 1884, p. 436, diese Zeitsclir. Bd. IL 1885. p. 264). 

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



Beukens, The microscope in botany). 

 Double-drum microscope (Journ. R. Micro?c. Soc. Ser. II vol. V, 1885. pt. 4. 



p. 703). 

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

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

 Portal)le microscopes (Journ. R. Microsc. Soc. Ser. II, vol. V, 1885, pt. 4 



p. 700). 

 Reichert'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). 

 TiFEiLER AND Son's dcmoHstration microscope (Knowledge vol. VII, 1885, p. 491 ; 



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

 Tueiler AST) Son's universal pocket microscope (Knowledge vol. VII, 1885, p. 



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



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

 Watsun-Wale microscope (Journ. R. Microsc. Soc. Ser. II vol. V, 1885, pt. 5, 



p. 860). 



b. Objectiv. 



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



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



no. 8 p. 141). 

 (Gundlacli, E.), An improvement in objectivcs (Journ. R. Microsc. Soc. Ser. II 



vol. V, 1885, pt. 4 p. 705; cfr. Proceed. Amer. Soc. Microscopists, 7*'» ann. 



meet. 1884, p. 148). 

 Guiidlach, E., The examination of objectives (Microsc. Bull. vol. IL 1885, 



p. 18). 

 Hastin;2:s, V. S., On the colour correction of double objectives (Engl. Mechan. 



1885, voll. XLI, p. 559, XLII, p. 8). 

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



1885, no. 9 p. 177). 

 Queen, J. W., Remarks on using oil-immersion objectives (Microsc. Bull. vol. 11, 



1885. p. 22). 

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



302, 327, 413, 563). 

 (Wales.AV.), Gare 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). 

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



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

 GuNDLAfirs improved objectives (Journ. R. Microsc. Soc. Ser. II vol. V, 1885, 



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



