CONTENTS V 



B u R G K R (ii. c). and Tj. S. Ornstein. On the theory of tlie Hrownian motion. 922. 

 BYL (a. j.) and N. H. Kolkmeuer. Investigation by means of X-rays of the crys- 



talstructure of white and i;rey tin. I. 405. II. The structure of white tin 494. 



III. The structure of grey tin. 501. 

 BY VOET (j. M.) and A. Smits. On the System Iron-Oxygen. 38B. 



— and A.. Smits. On the Signiticanci of tlie Volta-Klfect in Measurenients of Klec- 

 troraotive Equilibria. 562. 



CAPILLARY CONSTANTS (On the shape of hirge liquid drops and gas-bubbles and the 

 use made of them for the measurement of). 836. 



CARBAMiNic ACID (On phenyl) and its Homologues. 664. 



CARDINAAL (J.) presents a paper of Prof. J. A. Schouten : "On the direct analyses 

 ot the linear quantities belonging to the rotational group in three and four funda- 

 mental variables". 327. 



— presents a paper of I'rof. J. A. Schouten : "On the number of degrees of 

 freedom of the geodetically moving system and the enclosing euclidiau space 

 with the least possible number of dimensions." 607. 



CATALYSIS Part VI. Temperature coefficients of heterogeneous reactions. 1042. 

 CATH (p. G.). On the measurement of very low temperatures. XXIX. Vapour-pressures 



of oxygen and nitrogen for obtaining fixed points on the temperature-scale below 



0° C. 656. 

 CRLL-SUBSTRATA (On the influence of the increase of the osmotic pressure of the 



fluids of the body on dift'erent). 151. 

 CELLULOSE (On the influence of some salts on the dyeing of) with Henzopurpurin. 4B. 893. 

 CEPHEIDS (Expansion of a cosmic gassphere, the new stars and the). 730. 

 CEREBELLAR-ATACTIC phenomena (Experimental) in diseases lying extra-cerebellar. 1095. 

 CEREBELLAR ATAXIA as disturbance of the equilibrium-sensation. 637. 

 Chemistry. J. Böeseken and Chr. van Loon : "Determination of the Configuration ot 



cis-trans isomeric substances". 80. 



— A. F. HoLLEMAN and B. F. H. J. Matthes : "The Addition of Hydrogenbromide 

 to Allylbromide". 90. 



— A. H W. Aten : "The Passivity of Chromium". 3rd ('omuiunication. 138. 



— A. Smits: "On the Electrochemical Behaviour of Metals". 158. 



— F. M. Jaeger: "Investigations on Pasteur's Principle concerning the Relation 

 between Molecular and Crystallonomical Dissymmetry". V. Optically active com- 

 plex salts of Iridiura-Trioxalic Acid. 203. 



— F. M. Jaeger and W. Thomas: "Investigations on Pasteur's Principle concer- 

 ning the Relation between Molecular and Crystallonomical Dissymmetry". VI. 

 On the Fission of Potassium-Rhodium-Malouate into Its Optically-active Com- 

 l)onent8. 215. VII. On optically active Salts of the Tri-etyleuediaraine-Chromi- 

 series. 225. VIII. On the spontaneous Fission of racemie Potassium-Cobalti- 

 Oxalaie into its optically-active Antipodes. 693. 



— A. Smits: "The Phenomenon Electrical Supertension". 375. 



— A. Smits and C. A. Lobry üe Bruijn : "On the Periodic Passivity of iron". 11.382 



— A. SMiTs'and J. M. Byvoet : "On the System Iron-Oxygen". 386. 



