KONINKLIJKE AKADEMIE VAN WETENSCHAPPEN 
TE AMSTERDAM, 
PROCEEDINGS OF THE MEETING 
of Saturday March 25, 1905. 
DC 
(Translated from: Verslag van de gewone vergadering der Wis- en Natuurkundige 
Afdeeling van Zaterdag 25 Maart 1905, DI. XIII). 
OENE EEN MES: 
R. Mrenaker: “On moments of inertia and moments of an arbitrary order in spaces of arbi- 
trary high rank”: (Communicated by Prof. P. H. Scnoure), p. 596. 
S. J. pe Lance: “On the branchings of the nerve-cells in repose and after fatigue”. (Com- 
municated by Prof. C. Winkie), p. 599. (With one plate). 
J. A. C. Oupemans: “A short account of the determination of the longitude of St. Denis (Island 
of Réunion) executed in 1874”, p. 602. 
W. Huiskamp: “On the presence of fibringlobulin in fibrinogensolutions”. (Communicated 
by Prof. C. A. PEKELHARING), p. 610. 
J. D. van per Waats: “The transformation of a branch plait into a main plait and vice 
versa”, p. 621. (With one plate). 
JAN DE Vries: “A group of algebraic complexes of rays”, p. 627. 
Jan DE Vries: “On nets of algebraic plane curves’, p. 631. 
Errata, p. 633. 
The following papers were read : 
Mathematics. — “On moments of inertia and moments of an 
arbitrary order in spaces of arbitrary high rank.’ By Prof. 
Dr. R. MexMke at Stuttgart. (Communicated by Prof. P. H. 
SCHOUTE). 
In the “Mathematische Annalen” Vol. 23 (1884) pages 143—151 
I have pointed out a manner of calculating the moments of inertia, 
leading easily and quickly to the purpose and being independent 
of the number of dimensions. As an instance I chose the case of 
a figure filled with a homogeneous matter in the space of (n—1) 
dimensions, analogous to the tetrahedron, thus according to the well- 
known expression of Mr. Scnourr a simplex S,. Without being 
acquainted with this Mr. Scnoutr has lately treated this case in 
41 
Proceedings Royal Acad. Amsterdam. Vol. VII. 
