VI CONTENTS 



COMPLEX SALTS (On) of fem-raalonic acid. 283. 



— (Raceraic and optically active) of trivalent rhodium. 244. 



— (Hacemic and optically active) of rhodium txi-oxalic acid. 263. 

 CONDUCTIVITY (Are contractility and) two separate properties of the skeleton-muscles 



and the heart? 554. 

 CONSTITUTION-FORMULA of a-amino-acids and of betain. 88. 

 CONTRACTILITY (Are) and conductivity two separate properties of the skeleton-muscles 



and the heart? 564. 

 CORTEX (The auditory and visual) in the brains of two Madurese. 779. 

 CRITICAL TEMPERATURE (On the) and pressure of mercury and phosphorus, 138. 

 CRYSTALS (Contribution to the research of liquid). I[ The influence of the temperature 



on the extinction; further experiments upon the influence of the magnetic tteld. 210. 



— (The ratio of mass to weight for) and radioactive substances. 542. 

 CUMARIN (Action of solar light on). 875. 



CURVATURE of space (On the). 229. 



D E L 8 M A N (u. c). Short history of the head of vertebrates. 1005. 



DENJOY (a.). Sur une propriété des fonctions de variable complexe. 877. 



DENUDATION (On the rate of) in Java. 838. 



Dl-ATOMic substances (Isothermals of) and their binary mixtures. XIX. 178. 



DIETHYLENED1AMINE-8ALTS (8ome isomeric, complex cis-and trans) of cobaltum, and 

 on tri-ethylenediamine-zinc-chloride. 292. 



DIFFRACTION phenomenon (On the) caused by a great number of irregularly distribu- 

 ted apertures or opaque particles. 1278. 



DISSYMMETRY (Investigations into Pasteur's principle of the connection between mole- 

 cular and crystallonomical). III. Racemic and optically active complex salts of 

 trivalent rhodium 244. IV Racemic and optically active complex salts of rhodium 

 tri-oxalic acid. 263. 



DIURNAL VARIATION (Do the forces causing the) of terrestrial magnetism possess a 

 potential? 358. 



— (On the question whether the internal magnetic field, to which the) in terrestrial 

 magnetism is partly ascribed, depends on induced currents. 361. 



DONDER (th. d e). Sur les equations difterentielles du champ gravifique. 97. 

 DUBOIS (eu g.). On the relation between the quantities of the brain, the neurone 



and its parts, and the size of the body. 1328. 

 D U 1 N (c. F. V A n). Action of organo-raagnesium compounds on, and reduction 



of cineol. 66. 

 DYEING (Contributions to the theory of). 1st Communication. 636. 

 E A s T o N (c ). Periodicity of Wiutertemperatures in Western Europe, since A.D. 760. 1092. 

 ehrenfest (p.). In what way does it become manifest in the fundamental laws 



of physics that space has three dimensions? 200. 



— A paradox in the theory of the Brownian movement. 680. 

 EHRENFEST-AFANASSJEWA (t.). The defiuiteness of macroscopic processes and 



the kinetic theory. 1049. 

 EINSTEIN (On the mass of a material system according to the gravitation theory 

 of). 1076. 



EiNST kin's theory (On the energy of the gravitationfield in). 1238. 



