420 Neue Literatur. V, 3. 



b. Objectiv. 

 Gifford, ,T. AV., Apochromatic objectives (Journ. of Microsc. vol. I, 1888, p. 9). 



c. Ocular. 



L. A. S., Inquiry as to tlie best proportion of eye-piece to objective (Engl. 



Median, vol. XL VII. 1888, p. 169). 

 L. A. S., Powers of eye-pieces (Engl. Mechan. vol. XLVII. 1888, p. 146). 



d. Stativ. 



Dümaige's nose-piece for changing objectives (Journ. R. Microsc. Soc. 1888 



pt. 3 p. 488; cfr. diese Zeitschr. Bd. V, 1888, p. 351). 

 Fine-adjustment by tilting tbe stage (Journ. R. Microsc. Soc. 1888 pt. 3 p. 478). 

 Nelsoh's ruechanical stage (Journ. R. Microsc. Soc. 1888 pt. 3 p. 477). 



e. Belenchtungsapparate. 



Schieck's microscope lamps (Journ. R. Microsc. Soc. 1888 pt. 3 p. 490). 



f. Camera lucida. 



Dümaige's camera lucida (Journ. R. Microsc. Soc. 1888 pt. 3 p. 487 ; cfr. diese 

 Zeitschr. Bd. V, 1888, p. 352). 



g. Testobjecte. 



James, F. L. , Nobert's bands (St. Louis Med. and Surg. Journ. vol. LIV. 



1888, p. 166). 

 Ward. R. H.. Note on a Fasoldt test-plate (The Microscope vol. VIII, 1888, 



p. 99). 



b. Varia. 



(Beck, R. and J.), Adjusting and objective for the thickness of the cover- 

 glass (Journ. R. Microsc. Soc. 1888 pt. 3 p. 497). 



Harchek, A., Optometer und Apparat zum Messen der Brennweiten und zum 

 Centriren optischer Linsen, System North Hahchek (Breslauer ärztl. 

 Zeitschr. Bd. XII, 1888, p. 139). 



Henrici, J. F., Recently discovered microscopes of historic interest (The Mi- 

 croscope vol. VIII, 1888, p. 97). 



Latham, V. A. , The microscope and how to use it 14 (Journ. of Microgr. 

 vol. I, 1888, p. 102). 



Queen, J. AV., Apparent and actual size of field, magnifying power etc. 

 (Queen's Microsc. Bull. vol. V, 1888, p. 1). 



