^•^' ^- Neue Literatur. 55^^ 



(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). 



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

 crosc. Soc. 1892 pt. 4 p. 552; cfr. Engl. Mechau. vol. LV, 1892 p 920) 



c. Ocular. 



(Ewell, M. D.,) Spencer 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). 



(1. 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 device to take the place of the camera lucida in mia-o- 

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

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



f. Verscliiedeues. 



(Czapski , S.,) Abbe'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., üeber convergente und divergente dioptrische Systeme (Exxek's 



Repert. d. Physik Bd. XXVII, 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). 

 Laiub, 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'Ogag-ne,) 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). 

 Pulfricb, C, üeber einige von Prof. Auke construirte Messapparate tür Phy- 

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



