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Seaman, W. H., A College microscope (Proceed. Amer. Soc. Microscopists 



1890, vol. XII, 1891, p. 67). 

 Beck's bacteriological „Star" microscope (Jourii. R. Microsc. Soc. 1891 pt. G 



p. 806). 

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1). Objectiv. 



Blackliani, (i. E., Mesure de Touverture et de la distance frontale des 

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c. Beleuclitnngsapparate, 



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(1. Camera lucida. 



(Edinger, L.,) New apparatus for drawing low magnifications (Journ. R. 



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with the camera lucida (Journ. R. Microsc. Soc. 1891 pt. 6 p. 705). 



e. Polarisationsapparate. 



(Thompson, S. F.,) New polarizer (Journ. R. Microsc. Soc. 1891 pt. 6 p. 810; 

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f. Verschiedenes. 



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



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Microsc. Soc. 1891 pt. 6 p.814; cfr. diese Zeitschr. Bd. VIII, 1891, p. 14.5). 

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ser. 2, vol. VIT, 1891, p. 817). 



