580 Neue Literatur. II, 4. 



e. Mikrometer. 



(Belirens, W.), The ocular micromcter (Microsc. Bull. vol. II, 188.5. p. 20, 

 from Bküuens, W. J., The microscope in botany). 



(Behrens, W.), Winkei/s Mikromcterocular mit vertical beweglichem Mikro- 

 meter (Centralz. f. Opt. u. Median. Bd. VI, 1885, No. 16 p. 183, Abdruck 

 aus dieser Zeitschr. Bd. II, 1885, p. 41 ; cfr. auch Zeitschr. f. Instrumentenk. 

 Bd. V, 1885, H. 9 p. 326). 



(Tolnian, H. L.), Eyc-piece micrometers (Journ. R. Microsc. See. Ser. II vol. 

 V, 1885, pt. 4 p. 704; cfr. Amer. Monthly Microsc. Journ. vol. VI, 1885, 

 p. 115). 



f. Spectral- und Polarisationsapparate, 



Holmes, E. A., Polarized light as applied to the microscope. Read betöre 



tbc Hackney Microsc. Soc, 8pp. 

 M'Connel, J. C, Notes on the use of Nilui.'s prism (Proceed. Phys. Soc. 



London vol. VII, 1885, p. 22). 

 Moore, A. Y., The microspectroscope (The Microscope vol. V, 1885, p. 101). 

 Boeckkk's holder for analysing prism and goniometcr (Joui'n. R. Microsc. Soc. 



Ser. II vol. V, 1885, pt. 4 p. 705). 



ff. Varia. 



» 



Beckwith, E. F., Resolution of Amphipleura (The Microscope vol. V, 1885, 



p. 131). 

 Beeching, S., Amateur lens-grinding (Engl. Mechan. vol. XLI, 1885, p. 498). 

 Eternod, A., Des illusions d'optique dans les obscrvations au microscope. 



Geneve, 1885, 8 pp. 8". S. A. 

 (Govi), Discovery of pseudoscopy (Journ. R. Microsc. Soc. Ser. II vol. V, 1885, 



pt. 4 p. 722; cfr Atti della R. Accad. dei Lincei. Transunti t. VII, 1883, 



p. 183). 

 Grant, F., Microscopical (Engl. Mechan, vol. XLII, 1885, p. 57). 

 Malcolm, On binocular glasses adjustable to eyes having unequal focal lengths 



(Proceed. Phys. Soc. London vol. VII, 1885, p. 80). 

 (Nelson, E. 31.), Keeping both eyes open in Observation (Journ. R. Microsc. 



Soc. Ser. II vol. V, 1885, pt. 5 p. 881 ; cfr. Engl. Mechan. vol. XLI, 1885, 



p, 523). 

 (Smith, H. L.), Device for testing rcfractive index (Amer. Monthly Microsc. 



Journ. vol. VI, 1885, no. 10 p. 181). 

 Aperturo puzzle (Journ. R. Microsc. Soc. Ser. II vol. V, 1885, pt. 4 p. 721). 

 Apcrture puzzlcs (1. c. pt. 5 p. 882). 

 Lauuent's apparatus for registering the curvation and refraction of Icnses (1. c. 



p. 862; cfr. Comptos rend. de Paris t. C, 1885. p. 903). 



