KONINKLIJKE AKADEMIE VAN WETENSCHAPPEN 
TE AMSTERDAM. 
PROCEEDINGS 
VOLUME XVIII 
Ne, 9. 
President: Prof. H. A. LORENTZ. 
Secretary: Prof. P, ZEEMAN. 
(Translated from: Verslag van de gewone vergadering der Wis- en 
Natuurkundige Afdeeling, DI. XXIV). 
CONTENTS. 
F. ROELS: “On inhibition proceeding from a false recognition.” (Communicated by Prof. Dr. 
C. WINKLER), p. 1412. 
J. J. L. D. baron VAN HOEVELL: “The phylogenetic development of the cerebellar nuclei.’ 
nicated by Prof. C. WINKLER), p. 1421. 
P. H. GALLE: “On the relation between fluctuations in the strength of the Trade winds of the North- 
Atlantic Ocean in summer and departures from the normal of the wintertemperature in Europe.” 
(Communicated by Dr. VAN DER STOK), p. 1435. (With one plate). 
HENDRIK DE VRIES: “Circles cutting a plane curve perpendicularly.” L, p. 1449. 
JAN DE VRIES: “A simply infinite system of twisted cubics”, p. 1464. 
C. EIJKMAN and C. J. C. VAN HOOGENHUYZE: “The influence of feeding and of starvation on the 
development of polyneuritis gallinarum”, p. 1467. 
Miss A. SNETHLAGE: “On the Brownian Movement in Gases.” (Communicated by Prof. J.D. VAN DER 
WAALS), p. 1480. 
A. SMITS and A.H. W. ATEN: “The Application of the Theory of Allotropy to Electromotive Equi- 
libria.” IV. (Communicated by Prof. J. D. VAN DER WAALS), p. 1485. 
F. E. C. SCHEFFER: “On the allotropy of the ammonium halides”. Il. (Communicated by Prof. 
A.F. HOLLEMAN), p. 1498. 
H. A. BROUWER: “On the post-carboniferous age of granites of the highlands of Padang.” (Communi- 
cated by Prof. G. A. F. MOLENGRAAFF), p. 1513. 
F. ZERNIKE: “The clustering-tendency of the molecules in the critical state and the extinction of 
light caused thereby”. (Communicated by Prof. H. A. LORENTZ), p. 1520. 
P. E. VERKADE: “Glutaconic acid.” IL. (Communicated by Prof. J. BOESEKEN), p. 1527. 
F. A, H. SCHREINEMAKERS: “In-, mono- and divariant equilibria” VIII, p. 1539. 
“H. HAGA and F. M. JAEGER: “On the Symmetry of the Röntgen-patterns of Triclinic and some 
Rhombic Crystals, and some Remarks on the Diffraction-Images of Quartz”, p. 1552. (With five 
plates). 
J. BOTKE: “A contribution to the knowledge of the phylogeny of the wing pattern in Lepidoptera.” 
(Communicated by Prof. J. F. VAN BEMMELEN), p. 1557. 
C. A. PEKELHARING and C. J. C. VAN HOOGENHUYZE: “Further observations on the relation between 
the muscular tonus and the amount of kreatin in the muscles”, p. 1564. 
W. H. KEESOM and Miss C. VAN LEEUWEN: “On the second virial coefficient for rigid spherical 
molecules carrying quadruplets.” (Communicated by Prof. H. KAMERLINGH ONNES), p. 1568. 
D. J. HULSHOFF POL: “The fissura simialis in embryos of semnopitheci.” (Communicated by Prof. 
C. WINKLER), p. 1571. 
(Commu- 
91 
Proceedings Royal Acad. Amsterdam. Vol. XVIII. 
