418 Neue Literatur. IV, 3. 



e. Camera lucida 



GiLL, R., Camera lucida (Sci.-Gossip 1887 p. 116). 



f. Mikrometer. 



Ewell, M. D., A further study of centimeter scale „A'- (Proceed. Amer. Soc. 

 Microscopist 9"'- ann. meet. 1886, p. 75). 



Ewell, M. D-, Comparison of a Standard centimeter ruled on glass by Ciias. 

 Fasoi,dt with centimeter scale „A" (1. c. p. 83). 



Klaatsch , H. , Ein neues Hilfsmittel für mikroskopische Arbeiten [Radial- 

 mikrometer] (Anat. Anz. Bd. IL 1887, No. 20 p. 632—634; diese Zeitschr. 

 Bd. IV, 1887, p. 364). 



Campbell's micrometer-microscope (Journ. R. Microsc. Soc. 1887 pt. 3 p. 457). 



Dari.ing's screw-micrometer (Journ. R. Microsc. Soc. 1887 pt. 4 p. 652; diese 

 Zeitschr. Bd. IV, 1887, p. 361). 



g. Polarisationsapparate. 



(Diifet, H.) , Ueber ein neues Polarisationsmikroskop (Zeitschr. f. Instru- 

 mentenk. Bd. VII, 1887, H. 8 p. 287; cfr. Journ. de Physique t. II p. 564; 

 diese Zeitschr. Bd. IV, 1887, p. 64). 



Ligthon, W. , Analyzing diaphragm for polariscope (Amer. Monthly Microsc. 

 Journ. vol. VIII, 1887, no, 6 p. 109). 



h. Testobjeete. 



Hitcbcock, R. , Resolution of perls of Amphipleura (Amer. Monthly Microsc. 

 Journ. vol. VIII, 1887, no. 6 p. 105). 



i. Varia. 



(Bartalini, G.), Method of determining the index of refraction when the re- 

 fracting angle is large (Journ. R. Microsc. Soc. 1887 pt. 4 p. 665 ; cfr. Atti 

 della R. Soc. Toscana vol. V, 1887, p. 181). 



Dreyfus, L., Katalog zur wissenschaftlichen Ausstellung der 60. Versammlung 

 deutscher Naturforscher imd Aerzte zu Wiesbaden. Wiesbaden (Berg- 

 mann) 1887. 224 pp. 8". 



(Guebliart, A.), Magnifying power of dioptric Instruments (Journ. R. Microsc. 

 Soc. 1887 pt. 3 p. 490; cfr. Centralzeitg. f. Opt. u. Mechan. Bd. V, 1884, 

 p. 183, 194, 217). 



Gundlach, E. , Optical errors and human mistakes (Proceed. Amer. Soc. Mi- 

 croscopists 9'ii- ann. meet. 1886 p. 157). 



Hirnes, C. F., The stereoscope and its appHcations (Journ. Franklin Inst, 

 vol. CXXIII, 1887, p. 398, 425). 



