KONINKLIJKE AKADEMIE VAN WETENSCHAPPEN 
TE AMSTERDAM. 
PROCEEDINGS 
VOLUME XIX 
N°. 4. 
President: Prof. H. A. LORENTZ. 
Secretary: Prof. P. ZEEMAN. 
(Translated from: “Verslag van de gewone vergaderingen der Wis- en 
Natuurkundige Afdeeling,” Vol. XXIII and XXV). 
| CONTENTS, 
G. A. F. MOLENGRAAFF: “The Coral reef problem and Isostasy’, p. 610. 
F. ROELS: “Some further Experiments on Inhibition Proceeding from a False Recognition”. (Com- 
municated by Prof. C. WINKLER), p. 628. 
H. ZWAARDEMAKER: “Radium as a Substitute, to an equiradio-active amount, for Potassium in the 
so-called physiological fluids; an experimental investigation in collaboration with Mr. T. P. 
FEENSTRA, assistant at the Utrecht Physiol. Lab.” p. 633. 
F. E. C. SCHEFFER: “On the Influence of Temperature on Chemical Equilibria.” (Communicated by 
Prof. J. D. VAN DER WAALS), p. 636. 
Mrs. E. J. HOOGENBOOM-SMID: “Comparison of the Utrecht Pressure Balance of the VAN ’T HOFF 
Laboratory with those of the VAN DER WAALS Fund at Amsterdam.” (Communicated by Prof. 
P. ZEEMAN), p. 649. 
A. H. W. ATEN: “Some Particular Cases of Current potential Lines”. I. (Communicated by Prof. 
A. F. HOLLEMAN), p. 653. 
M. J. VAN UVEN: “Skew Frequency Curves.” (Communicated by Prof. J. C. KAPTEYN), p. 670. 
A. PANNEKOEK: “Calculation of Dates in the Babylonian Tables of Planets.” (Communicated by 
Prof. E. F. VAN DE SANDE BAKHUYZEN), p. 684. 
A. SMITS: “On the System Mercury-Iodide.” (Communicated by Prof. P. ZEEMAN), p. 703. 
A. SMITS: “On the Influence of the Solvent on the Situation of the Homogeneous Equilibrium.” I. 
(Communicated by Prof. F. A. H. SCHREINEMAKERS), p. 708. 
F. A. H. SCHREINEMAKERS: “In-, mono- and divariant equilibria.” Xl, p. 713. 
L. RUTTEN: “Modifications of the facies in the Tertiary Formation of East-Kutei (Borneo).” (Com- 
municated by Prof. A. WICHMANN), p. 728. ; 
H. A. LORENTZ: “Some remarks on the theory of monatomic gases”, p. 737. 
H. A. LORENTZ: “On HAMILTON's principle in EINSTEIN’s theory of gravitation”, p. 751. 
Shy) 
Proceedings Royal Acad. Amsterdam. Vol. XIX. 
