IX, 4. Neue Literatur. 551 



(Tolmaii, H. L.,) Magnifying power of objectives (Journ. R. Microsc. Soc. 

 1892 pt.4 p.545; cfr. Amer. Monthly Microsc. Journ. vol. XIII, 1992, p. 93). 



(Tolman, H. L.,) New objectives (Journ. R. Microsc. Soc. 1892 pt. 4 p.545: 

 cfr. Amer. Monthly Microsc. Journ. vol. XIII, 1892, p. 98). 



(Wright, L.,) Spherical aberration — Apochromatic objectives (Journ. R. Mi- 

 crosc. Soc. 1892 pt. 4 p. 552; cfr. Engl. Mechan. vol. LV, 1892, p. 220). 



c. Ociilar. 



(Ewell, 31. D.,) Spexckh and Smith's aplanatic eye-piece (Journ. R. Microsc. 

 Soc. 1892 pt. 4 p. 545; cfr. Amer. Monthly Microsc. Journ. vol. XIII, 

 1892, p. 103). 



d. Tisch. 



(Morton, F. L.,) A revolving table (Journ. R. Microsc. Soc. 1892 pt.4 p. 549; 

 cfr. Amer. Monthly Microsc. Journ. vol. XIII, 1892, p. 120). 



e. Camera lucida. 



PifFard, H. G., A dcvice to take the place of the camera lucida in micro- 

 graphy, also an improved means of obtaining critical Illumination for the 

 micro8coi)e (New York med. Journ. vol. LVI, 1892, p. 71). 



f. Ver^^clüed«'nes. 



(Czapski , S.,) Abüe's method and apparatus for the determination of focal 



lengths (Journ. R. Microsc. Soc. 1892 pt. 5 p. 678; cfr. Zeitschr. f. Instru- 



mentenk. Bd. XII, 1892, p. 185). 

 Ferraris, G., Ueber convergente und divergente dioptrische Systeme (Exneh's 



Repert. d. Physik Bd. XXYII, 1891, p. 382; cfr. Zeitschr. f. Instrumentenk. 



Bd. XII, 1892, H. 8 p. 285). 

 (Finzi, G.,) Der Quarz in den wissenschaftlichen Laboratorien (Centralzeitg. 



f. Opt. u. Mechan. Bd. XIII, 1892, No. 15 p. 165). 

 (Kerber, A..) Einige Sätze über die Vereinigung der heteronomen Strahlen 



(Zeitschr. f. Instrumentenk. Bd. XII, 1892, H. 8 p. 287; cfr. Centralzeitg. 



f. Opt. u. Mechan. Bd. XII, p. 121). 

 Lamb, J. M., The evolution of the Compound microscope (Amer. Monthly 



Microsc. Journ. vol. XII, 1891, no. 12 p. 273). 

 Nelson, E. M., A new spherometer (Journ. R. Microsc. Soc. 1892 p. 5 p. 670). 

 (d'Ogagiie,) Geometrical representation of the formula for lenses (Journ. R. 



Microsc. Soc. 1892 pt. 5 p. 683; cfr. Centralzeitg. f. Opt. u. Mechan. Bd. XIII. 



1892, p. 146). 

 Pulfricli, C, Ueber einige von Prof. Abbe constrüirte Messapparate für Phy- 

 siker (Zeitschr. f. Instrumentenk. Bd. XII, 1892, H. 9 p. 307). 



