128 Neue Literatur. V, 1. 



Williams, G. H., On a new petrographical microscope of american nianu- 



facture (Circul. of John Hopkins Univ. Baltimore vol. VII , no. 61 , 62 



p.22; Amer. Journ. of Sei. (3) vol. XXXV, 1888, p. 114). 

 American mircroscopes (Amer. Montbly Microsc. Journ. vol. IX, 1888, no. 1 p. 15). 

 ÜAMrAM's Compound nücroscopes (Journ. R. Microsc. Soc. 1888 pt. 1 p. 109). 

 Collins's aquarium microscope (Journ. R. Mici'osc. Soc. 1888 pt. 1 p. 103). 

 Ditboscq's projeetion microscope (Journ. R. Microsc. Soc. 1888 pt. 1 p. 108). 

 Dcjfet's polarizing microscope (Journ. R. Microsc. Soc. 1888 pt. 1 p. 107; cfr. 



Bull, de la Soc. de Mineral, t. IX. 1886. p. 275; diese Zeitscbr. Bd. IV. 



1887, p. 64). 

 Giles's army medical microscope (Journ. R. Microsc. Soc. 1887 pt. 6 p. 1012). 

 Leach's lantern microscope (Journ. R. Microsc. Soc. 1887 pt. 6 p. 1019). 

 Lexhossek's polymicroscope (Journ. R. Microsc. Soc. 1888 pt. 1 p. 104; cfr. 



ViRciKnv's Arch. f. Patliol., Anat. u. Physiol. Bd. LXX, 1877). 

 Nelson 's portable microscope (Journ. R. Microsc. Soc. 1887 pt. 6 p. 1013). 

 Newton's electric polarizing projeetion-microscope (Journ. R. Microsc. Soc. 1887 



pt. 6 p. 1021). 

 Schdlze's aquarium microscope (Journ. R. Microsc. Soc. 1887 pt. 6 p. 1010; 



cfr. diese Zeitscbr. Bd. IV, 1887, p. 318). 

 Whodiiead's microscope witb large stage (Journ. R. Microsc. Soc. 1887 pt. 6 



p. 1015). 



b. Objectiv. 



Brokensbire, F. R., Measurement of magnifying power of raicro - objeetives 



(Engl. Median, vol. XLVI, 1887, p. 300). 

 (Hirst, G. D.), Metbod of intensifying tbe resolving power of microscope ob- 

 jeetives (Journ. R. Microsc. Soc. 1887 pt. 6 p. 1033 ; cfr. Engl. Mecban. 



vol. XLVI, 1887, p. 232). 

 Hodgkinson, A., On tbe diffraction of microscopic objeets in relation to the 



resolving power of objeetives (Proceed. Manchester Lit. and Phil. Soc. 



vol. XXV, 1886, p. 263). 

 Nelson, E. M., Measurement of power (Journ. R. Microsc. Soc. 1887 pt. 6 



p. 1032; cfr. Engl. Mecban. vol. XLVI, 1887, p. 188). 

 Pelletan, J., Les objeetifs. Suite. (Journ. de Microgr. t. XI, 1887, no. 16 p. 546.) 

 Ross, W. A., New optical substance for objeetives of microscopes (Engl. 



Mechan. vol. XLVI, 1887.. p. 278, 301). 

 Schulze, A., On Aiuje's apoebromatie micro-objeetives and compensating eye- 



pieces, made of the new optical glasses in the works of Dr. Caul Zeiss in 



Jena, with some general remarks on object-glasses (Proceed. of tbe Phil. 



Soc. Glasgow vol. XVIII, 1887, p. 28). 

 Measurement of magnifying power of objeetives (Engl. Mechan. vol. XLVI, 



1887, p. 325, 341, 365, 417). 



