KONINKLIJKE AKADEMIE VAN WETENSCHAPPEN 



TE AMSTERDAM. 



PROCEEDINGS 



VOLUME XXI 

 N°. 1 and 2. 



President: Prof. H. A. Lorentz. 

 Secretary: Prof. P. Zeeman. 



(Translated from : "Verslag van de gewone vergaderingen der Wis- en 

 Natuurkundige Afdeeling," Vol. XXVI and XXVII). 



CONTENTS. 



J. J. VAN LAAR: "On the Course of the Values of a and b for Hydrogen at Different Temperatures 

 and Volumes" III and IV (Continued). (Communicated by Prof. H. A. LORENTZ), p. 2 and p. 16. 



Q. C. HERINGA: "On the Peripheral Sensitive Nervous System". (Communicated by Prof. J. BOEKE), 

 p. 26. 



W. J. A. SCHOUTEN: "On the Parallax of some Stellar Clusters". (Second communication). (Commu- 

 nicated by Prof. J. C. Kapteyn), p. 36. 



C. EljKMAN and D. J. Hulshoff Pol: "E.xperiments with Animals on the Nutritive Value of Standard 



Brown-Bread and White-Bread", p, 48. 



T. Ehrenfest-AfanassjewA: "An indeterminateness in the interpretation of the entropy as /og^ W". 

 (Communicated by Prof. J. P. KUENEN), p. 53. 



J. F. VAN BemmeleN: "On the primary character of the markings in Lepidopterous pupae", p. 58. 



Gunnar Nordstrom: "Calculation of some special cases, in Einstein's theory of gravitation". 

 (Communicated by Prof. H. A. LORENTZ), p. 68. 



J. BÖESEKEN and Chr. VAN LoON: "Determination of the Configuration of cis-trans isomeric sub- 

 stances", p. 80. 



A. F. HOLLEMAN and B. F. H.J.MATTHES: "The Addition of Hydrogenbromide to Allylbromide", p.90. 



L. S. ORNSTEIN : "The variability with time of the distributions of Emulsion-particles". (Communi- 

 cated by Prof H. A. LORENTZ), p 92. 



L. S. ORNSTEIN: "On the Brownian Motion". (Communicated by Prof. H. A. LORENTZ), p. 96. 



L. S. ORNSTEIN and F. Zernike: "The Theory of the Brownian Motion and Statistical Mechanics". 

 (Communicated by Prof. H. A. LORENTZ), p. 109. 



L. S. ORNSTEIN and F. ZERNIKE: "The Scattering of Light by Irregular Refraction in the Sun". (Com- 

 municated by Prof. W. H. JULIUS), p. 115. 



S. W. VISSER: "On the diffraction of the light in the formation of halos. II A research of the 

 colours observed in halo-phenomena'. (Communicated by Dr. J. P. VAN DER STOK), p. 119. 



ARNAUD Denjoy: "Nouvelle demonstration du théorème de JORDAN sur les courbes planes". 

 (Communicated by Prof. L. E. J. BROUWER), p. 125. 



H. ZWAARDEMAKER and F. HOGEWIND: "On the spontaneous transformation to a colloidal state of 

 solutions of odorous substances by exposure to ultra-violet light", p. 131. 



A. H. W- ATEN: "The Passivity of Chromium". (Third Communication). (Communicated by Prof. 

 A. F. HOLLEMAN), p. 138. 



S. DE BOER: "On the influence of the increase of the osmotic pressure of the fluids of the body 

 on different cell-substrata". (Communicated by Prof. G. VAN RlJNBERK), p. 151. 



A. SmitS: "On the Electrochemical Behaviour of Metals". (Communicated by Prof. P. ZEEMAN), p. 158. 



J. W. VAN WlJHE: "On the Nervus Terminalis from man to Amphioxus", p. 172. (With one Plate). 



M. W. Beijerinck: "The significance of the tubercle bacteria of the Papilionaceae for the host 

 plant", p. 183. 



D. COSTER: "On the rotational oscillations of a cylinder in an infinite incompressible liquid". (Com- 



municated by ProL J. P. Kueneni, p. 193. 

 F. M. JAEGER: "Investigations on PASTEUR'S Principle concerning the Relation between Molecular 



and Crystallonomical Dissymmetry. V. Optically active complex-salts of Iridium-Trioxalic Acid." 



p. 203. 

 F. M. JAEGER and WILLIAM THOMAS: Idem VI. "On the Fission of Potassium-Rhodium-Malonate 



into Its Optically-active Components", p. 215. 

 F. M. JAEGER and WILLLIAM THOMAS: Idem VII. "On optically active Salts of the Tri- 



ethylenediamine-Chromi-series", p. 225. 

 A. B. Droogleever Fortuvn: "The Involution of the Placenta in the Mouse after the Death of 



the Embryo" (Communicated by Prof. J. BOEKE), p. 231. 

 1. K. A. Wertheim SalomonsoN: "The Limit of Sensitiveness in the String galvanometer", p. 235. 

 H. C. Delsman: "The egg-cleavage of Volvox globator and its relation to the movement of the 



adult form and to the cleavage types of Metazoa." (Communicated by Prof. J. BOEKE), p. 243. 



Proceedings Royal Acad. Amsterdam. Vol. XXI. 



