Journal of morphology . The problem is a broad one, and involves the discussion ofthe relation existing between the microsome and the cytoplasmicthread proper. The following is my provisional answer. The microsome of the cell-body is more often located atthe junction of two or more cytoplasmic filaments. In other 438 WATASE. [Vol. VIII. cases microsome appear as varicosities onwithout any visible cross-threads. This latterbe due, in some cases, to the plane of the crin position which makes them invisible in ait may be due to the technical difficulty ofextremely delicate cross-threads in a cert
Journal of morphology . The problem is a broad one, and involves the discussion ofthe relation existing between the microsome and the cytoplasmicthread proper. The following is my provisional answer. The microsome of the cell-body is more often located atthe junction of two or more cytoplasmic filaments. In other 438 WATASE. [Vol. VIII. cases microsome appear as varicosities onwithout any visible cross-threads. This latterbe due, in some cases, to the plane of the crin position which makes them invisible in ait may be due to the technical difficulty ofextremely delicate cross-threads in a certainthese remarks, however, apply to those cases a single thread,appearance mayoss-threads lyinggiven section, orpreserving suchcell. Neither ofin which the mi- As. Fig. 5. C W-. M Fig. 5. Diagram of a dividittg cell, showing the cytoplasmic framework of thecaryokinetic figure and its relation to the rest of the cell-body. The chromosomesand the spindle fibres which are directly concerned with their division areomitted from the diagram. C. C, Centrosomes ; S., Spindle filaments; M.,microsomes or Cyto-microsomes; Eq. M., Equatorial microsomes or cell-plate,the microsomes chrotnatiq7ces of Guignard; As. C, ?^ Astroccele (Fol), thezone mt^dullaire of the attractive sphere of E. van Beneden ; As. f., fibres ofthe aster, vnth microsomes imbedded in the substance of each fibre, giving riseto the varicose appearance. The diagram is especially intended to show thedistribution of the microsomes in different parts of the cell. crosomic varicosities appear in the substance of straight spindlefilaments without any cross-branches. It further appears prob-able that the substance of the cytoplasmic thread and that ofthe microsome stands in a certain genetic relationsh
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