921 
work for the pathology of the medulla oblongata. Rupour Brun?) 
has given a nearly complete summary of the literature on this 
subject, into which I will not enter here. 
The foregoing case has been communicated, because in a clinical 
sense it is a peculiarly well-defined case. 
A few remarks I may be allowed to add still about it. Before 
the arteria vertebralis has united with the contra-lateral one to 
form the arteria basilaris, it supplies the medulla oblongata with 
several small branches. Among these branches the art. spinalis dorsalis 
Scheme of the Nutrient bloodvessels of the medulla oblongata after Durer. 
(Archives de Physiologie. 1873. Tome V. Planche VIII). 
Fig. I. A. Art. cerebellaris posterior 
(inferior). 
B. Art. cerebellaris media 
(inferior anterior). 
C, Art. cerebellaris superior. 
D. Art. cerebellaris posterior. 
1. Art. radicularis (N. acces- 
soril spinalis). 
. Art. spinalis anterior. 
3. Art. radicularis (N. X et 
NS EX): 
4. Art. auditiva spinalis (N. 
VII et N. VIII). 
5. Art. radicularis N. VI, 
6—7. Arteriae fossae supra: 
bo 
olivaris, 
8. Arteria auditiva interna 
(from B). 
9. Art. Ny Ve 
10. Art, radicularis N. XII. 
Fig. Il. A. Plexus chorioideus. 
B. Tela chorioidea. 
C. Foramen Morgagni. 
D. Clavus. 
!. Arteria cerebelli posterior 
inferior. 
2—4, Small branches of this 
artery. 
5. Arteria spinalis posterior. 
6—8. Small branches of this 
artery. 
1) Ruporr Brun. Ein Fall von doppelseitigen symmetrischen Erweichungssystem 
im verlängerten Mark. 
Arbeiten aus dem hirnanatomischen Institute der Universität in Zürich. Bd. VI. 
1912. S. 270—400. 
61 
Proceedings Royal Acad. Amsterdam. Vol. XVII. 
