IV, 1. Neue Literatur. 131 



Pi-eifer's embryograph for use with Zeiss microscopes (Stud. Bibl. Laborat. 

 John Hopkins Univ. vol. III, 1886, p. 480; cfr. Journ. R. Microsc. Soc. 

 1887, pt. 1 p. 148; Amer. Naturalist vol. XX, 1886, no. 12, p. 1073; diese 

 Zeitschr. Bd. IV, 1887, p. 67). 



li. Varia. 



Abbe. E., On improvements of tbe microscopc witb the aid of new kinds of 



optical glass (Journ. R. Microsc. Soc. 1887, pt. 1 p. 20; cfr. Sitzber. d. 



Jen. Gesellscb. f. Med. u. Naturwiss. 1886, Juli). 

 Bostwick, A. E., On a means of determining tbe limits of distinct vision 



(Science vol. VIII, 1886, p. 232). 

 Didelot, L., Du pouvoir amplifiant du microscope. Determination theorique 



et experimentale. These de Lyon. 1886. 48 pp. 8°. 1 piche. 

 Exner, S., Nachtrag zu der Abhandlung „üeber Cylinder, welche optische 



Bilder entwerfen" (Arch. f. d. ges. Physiol. Bd. XXXIX, 1886, p. 244; cfr. 



Journ. R. Microsc. Soc. Ser. II vol. VI, 1886, pt. 6 p. 1062). 

 H., Measuring refractive index (Amer. Monthly Microsc. Journ. vol. VIII, 1887, 



no. 1 p. 12; cfr. diese Zeitschr. Bd. III, 1886, p. 68, 319). 

 van Heui'ck, H., Comparateur ä employer dans les recherches microscopiques 



(Bull. Soc. Beige de Microscopie t. XIII. no. 3, 1886, p. 76). 

 Höegh, E. V., Eigenschaften der Jenenser Glassorten (Centralz. f. Opt. u. 



Mechan. Bd. VIII, 1887, No. 2 p. 13). 

 Houzeaii, J. C, Microscope et telescope (Bull. Soc. Beige de Microscopie 



t. XIII, no. 5, 1887, p. 90). 

 Nagura, O., Die Auswahl eines Mikroskopes (Tokio Med. Journ. 1886, No. 420.) 



[Japanisch.] 

 Nelson, S. M., Finding the general character of the components of a cemented 



combination lens (Engl. Mechan. vol. XLIV, 1886, p. 320; cfr. Journ. 



Quek. Microsc. Club. vol. III, 1887, p. 13; Journ. R. Microsc. Soc. 1887, 



pt. 1 p. 151; diese Zeitschr. Bd. IV, 1887, p. 57). 

 Pscheidl, W., Bestimmung der Brennweite einer Concavlinse mittels des zu- 

 sammengesetzten Mikroskopes (Sitzber. d. k. Acad. d. Wiss. Wien Bd. XCIV, 



1886, p. 66.) 



3. Mikrophotographie. 



Evans, F. H., Photo-micrography (Journ. a. Transact. of the Photogr. Soc. 

 vol. XI, 1886, p. 25). 



van Heurck, H., Application du petit appareil photographique aux micro- 

 scopes continentaux (Bull. Soc. Beige de Microscopie t. XIII, no. 4, 1887, 

 p. 82). 



White, T. C, On a simple method of photographing biological objects (Journ. 

 Brit. Dental. Assoc. 1886, Oct. — S.A. 8 pp.) 



9* 



