188 Ernst Küster: Morphologie und Physiologie der Zelle. 



and found to be entively destroyed. In the case of seedlings the degree of resistibility 

 were different from those in the case of seeds, the most marked being Vicia Faba, 

 and the least Zea Mays. 



3. Experiments npon aquatic plants. Lern na paucicostata, one of the 

 water-plants selected for experiments, was completely destroyed in 0.001 "/q Solution 

 of copper in 4 days, and in 0.0001 "/o Solution in 6 days; the minimum power of de- 

 stroying the vitality of that plant must be above 0.00001 "/q, while under 0.000005 % 

 there was no marked influence. 



From the above experiments the author coucludes that copper, although less 

 poisonous than corrosive Sublimate and salicilic acid, proves to be sufficiently poisonous, 

 as might be perceived in the case of Lemna paucicostata, if placed even in such 

 weakest Solution of 0.00001 "/q, being de.stroyed. (T. Ito.) 



31. Yasnda, A. On the Accommodation of some Infusoria to the Solutions of 

 certain Substances in Various Concentrations. (Botanical Magazine, XI, Tokyo, 1897, 

 p. 75 — 80.) (Japanisch.) 



This is an article in Japanese of the paper published by the author in English 

 in the same magazine. 



XIII. Morphologie und Physiologie der Zelle. 



Keferent: Ernst Küster (Halle a, S.). 



Vorbemerkung. 



Die ßeferate sind nach folgender Disposition angeordnet: 

 I. Technisches. 



1. Mikro.skopie, Allgemeines. Ref. 1 — 10. 



2. Mikroskop und Nebenapparate, ßef. 1 1 — 20. 

 8. Mikrotom und Mikrotomtechnik. Eef. 21 — 41. 



4. B'ixiren, Färben, mikrochemische Reactionen u. dergl. Ref. 42 — 63. 



5. Mikrophotographie. Ref. 64 — 68. 



6. Technische Mittheilungen anderer Art. Ref. 69 — 85. 



IL Die Zelle im Allgemeinen. — Das Protoplasma. Ref. 86 — 99. 



III. Kern, Kerntheiking und Centrosom, Kernverschmelzung, Zelltheilung. 



1. Kern und Kerntheilung. Ref. 100 — 121. 



2. Das Centrosom. Ref. 122—131. 



3. Zelltheilung, Kern Verschmelzung. Ref. 132 — 137. 



IV. Inhaltskörper der Zelle: Stärke, Inulin, Farbstoffe, Krystalle,Krystalloide etc. 



Ref. 138—151. 

 V. Die Zellmembran. Ref. 152. 



