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c. Stativ. 



(Pfeffer, W.,) New liot stage and accessories (Journ. R. Microsc. Soc. 1891 



pt. 4 p. 521 ; cfr. diese Zeitschr. Bd. VII, 1890, p. 433). 

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d. Beleuchtuiigsai)parate. 



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from parallel to convergent ligbt (Journ. R. Microsc. Soc. 1891 pt. 4 p. 519; 



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1891, p. 335). 

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e. Testobjecte. 



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f. Verschiedenes. 



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(Czapski, S.,) Die voraussichtlichen Grenzen der Leistungsfähigkeit des 

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