Anatomy. — “OMBREDANNE's Theory of the “lames vasculaires” 
and the anatomy of the canalis eruralis”. By G. C. Herinaa. 
(Communicated by Prof. J. Boeke). 
(Communicated at the meeting of December 18, 1920.) 
When adopting the reasonable and general view tbat the muscular 
fasciae are to be considered as compressions of loose connective 
tissue, originated under mechanic influences exerted by the surrounding 
individual muscles, a conception bas been propounded, which brings 
before ‘our mind the ‘““muscle-compartments” in a clear and com- 
prehensible way, and which is also of great practical value. Still, 
it would seem that the scientific value of this view may justly be 
contested. It would seem also that in order to obtain a clear notion 
of the matter these formations of connective tissue themselves should 
receive more of our attention than the spaces invested by the fasciae 
and filled up with muscles. 
I would call upon the reader to consider a fascia as a thin layer 
of undifferentiated connective tissue, bounded on either side by a 
lamina of fibrillary connective tissue. Further we conceive a blood- 
vessel running in the middle layer and we imagine, in accordance 
with the publica opinio, that the two plane faces have, as it were, 
been attached through a polishing process to this interstitium of 
connective tissue by the mechanic action of the surrounding muscles, 
or by other tissues. This hypothesis approaches real facts, for a 
similar position we observe of the vasa plantaria med. und lat. in 
the septa intermuscularia pedis; a similar location we observe of 
the vena jugularis ext. in the fascia superficialis colli, of the aa. 
meningeae and the sinus durae matris in the hard cerebral membrane, 
of the vena saphena magna in the fascia lata, of the vasa epigastrica 
in the fascia transversalis"), and finally in a similar way numerous 
nerves — suffice it to mention only the n. cutaneus femoris lateralis, 
the branches of the n. femoralis, of the nervi superficialis colli — 
are running in the fasciae, prior to their ultimate intrusion into the 
skin. 
The instances here enumerated, could easily be increased. They 
lend support to the roughly phrased conception that, generally 
1) Tesrur et Jacos, Traité d’Anat. topogr., p. 45. 
78 
Proceedings Royal Acad. Amsterdam. Vol. XXIII. 
