KONINKLIJKE AltADEMIE VAN WETENSCHAPrEN 

 TE AMSTERDAM. 



PROCEEDINGS OF THE MEETINGS 



of Saturday May 31 and June 28, 1913. 

 Vol XVI. 



President: Prof. H. A. Lorentz. 

 Secretary: Prof. P. Zeeman. 



Translated from: Verslag van de gewone vergadering der Wis- en Natuurkundige 

 Afdeeling van Zaterdag 31 Mei en 28 Juni 1913, Dl. XXII). 



CJ02srTE3vrTS. 



N. Waterman : "Investigations into the internal secretion of the pancreas". (Communicated 



by Prof. C. A. Pekelharing), p. 2. 

 C. VAN WissELiNGH : "On the nucleolus and karyokinesis in Zygnema." (Communicated by 



Prof. J. W. Moll), p. 1!. 

 I. Snapper: "Oh the change in the permeability of the red bloodcorpuscles (also in man)". 



(A contribution to the knowledge of chlorine-retention in fever). (Communicated by Prof. 



H. J. Hamburger), p. 19. 

 A. Smits : "The systems phosphorus and cyane." (Communicated by Prof. J. D. van der 



Waals), p. 27. 

 A. Smits and H. Vixseboxse : "On the pseudo-system methylrhodanide-methylmustard oil". 



(Communicated by Prof. A. F. HollEman), p. .S3. 

 J. D. van der Waals : "On the point in which the solid state disappears as an answer to 



the question in how far this point can be compared to the critical point of a liquid. The 



easiest way to do this is by means of the i/»- curve", p. 39. 

 Ch. H. van Os: "On a system of curves occurring in Einstein's theory of gravitation". 



(Communicated by Prof. H. A. Louentz), p. 40. 

 J. J. VAN Laar: "Some difficulties and contradictions met with in the drawing up of the 



equation of state". (Communicated by Prof. H. A. Lorentz). p. 44. 

 E. H. BiiCHNER: "Colloids and the phase rule". (Communicated by Prof A. F. Holleman), 



p. 60. 



E. Laqueur and W. R. van der Meer: "Velocity of the intestinal movements in different 



mammals". (Communicated by Prof. IL J. Hamburger), p. 65. 



J. H. Bonnema: "The orientation of the shells of Beyrichia tuberculata Klöden sp". (Com- 

 municated bv Prof. J. W. Moll), p. 67. 



J. P. KuENEN and S. W. Visser: "A Viscosimeter for volatile liquids", p. 7.5. 



J. D. VAN DER Waals Jr.: "On the law of partition of energy." IIL (Communicated by 

 Prof. J. D. VAN der Waals), p. 84. 



J. BÖESEKEN and W. D. Cohen: "On the reduction of aromatic ketones". (Communicated 

 by Prof. A. F. Holleman), p. 91. 



F. A. H. Schreinemakers : "Equilibria in ternary systems". Part VIII, p. 99. 



H. Kamerlingh Onnes: "Further experiments with liquid helium. H. On the galvanic re» 

 sistance of pure metals etc. VII. The potential difference necessary for an electrical current 

 through mercury below 40.19 K.", (Continued; p. 113. 

 J. E. DE Vos VAN Steenwijk; "Investigation of the ine([ualilies of approximately monthly 

 period in the longitude of the mooti, according to the meridian observations at Greenwich." 

 (Communicated by Prof. E. F. v.iN de Sande Bakhuyzen), 1st Part p. 124, 2nd Part p. 141. 



1 

 ProreedingP Royal Acad Amsterdam. Vol. XVI. 



