Summary
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1.
The chromosome is considered as a linin bag filled with chromatin while the chromosomal vesicle is looked upon as a linin bag containing, in addition to chromatin, a varying amount of achromatic material taken up from the cytoplasm during the telophase.
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2.
The linin sheath of the chromosomes becomes visible in conjunction with the telophosic vesiculation and can be followed through interkinesis thus showing that this unit of nuclear structure maintains its individuality during rest.
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3.
The prophase chromosomes arise within the vesicles and are liberated by the dissolution of its walls.
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4.
The somatic nucleus of the frog is quite similar to that of a number of other organisms and, as a consequence, these findings may be of fairly general application, if so, they will serve as a general structural confirmation of the inferential evidence for chromosomal individuality, on which the theory has been advanced in the past.
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5.
The nucleus of hibernating frogs contains much less chromatin than that of summer frogs. The cytoplasm entirely loses its basophilic character. At — dg C the basophilic material is regained.
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Kater, J.M. Nuclear structure in active and hibernating frogs. Z.Zellforsch 5, 263–277 (1927). https://doi.org/10.1007/BF01094499
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DOI: https://doi.org/10.1007/BF01094499