44 
Fig. 3. Columba livia (pigeon), sagittal section of cord; Reıssner’s 
fibre in canalis centralis. FuemminG; iron hematoxylin. 150. 
Fig. 4. Mus musculus (mouse), sagittal section of cord. Canalis 
centralis filled with loose epithelial cells; Reısswer’s fibre undulating. 
FLemMine; iron hematoxylin. X ca. 175. 
Fig. 5. Lepidosteus osseus, sagittal section; Rerssnur’s fibre at its 
posterior end giving off branches. 1% chromic acid: iron hematoxylin. 
x. 600. ’ 
Fig. 6. Cynoscion regale, sagittal section; Reıssner’s fibre within 
the membrane of torus. FLEMMING; iron hematoxylin. X 150. 
Fig. 7. Eutainia sirtalis (garter snake), frontal section; ReıssnEr’s 
fibre in aqueduct of Syıvıus. Fremming; iron hematoxylin. X 100. 
Fig. 8. Pomatomus saltatrix, sagittal section; Reıssner’s fibre 
ventral to torus undergoing division; smaller branch entering torus. 
Corrosive sublimate-acetic; iron hematoxylin. XD: 
Fig. 9. Salvelinus fontinalis, sagittal section; Reıssner’s fibre ven- 
tral to torus and entering torus: optic ventricle partly filled with 
coagulum. ZENKER; methylen blue; acid fuchsin. X ca. 125. 
Fig. 10. A portion from the center of Fig. 9 enlarged to show 
Reıssner’s fibre passing beneath the membrane and entering the torus. 
x. 450. 
Fig. 11. Cynoscion regale, transverse section in the anterior part 
of the optic lobes; Reıssner’s fibre in in the optic ventricle, below the 
tectum. The darkly staining sheath of the fibre may be seen in the 
section. 
Fig. 12. Alligator mississippiensis, sagittal section of medulla; 
Reissner’s fibre entering 4th ventricle. Fremmine; iron hematoxylin. 
5100. 
Fig. 13. Cynoscion regale, transverse section of cord; Reıssner’s fibre 
in center of canalis centralis. Corrosive; Euruicu; Congo. X ca. 1000. 
Nachdruck verboten. 
Zum Blutgefäßapparat der Ganglienzelle. 
Von Prof. Dr. ALserr ApamKinwicz (Wien). 
Im Jahre 1886 habe ich!) den Nachweis geliefert, daß die 
Ganglienzellen ihren eigenen Blutgefäßapparat besitzen. 
Damit war zum ersten Mal die wichtige Thatsache festgestellt, daß 
einzelne Zellen Organe sind. Ich hatte zu meinen Unter- 
suchungen die Intervertebralganglien des menschlichen Plexus 
1) Der Blutkreislauf der Ganglienzelle. Berlin 1886, Hirschwald. 
