VT C ONT K N T S. 



Chemistry. II. W. Bakhuis Koozeboom and A. H. \V. Aten : "x\buorma,l solubilily lines 

 in binary mixtures owing to tlie existence of compounds in tiie solution." 456. 



— J. J. VAN Laar: "On the shape of meltingpoint-curves for binary mixtures, 

 when the latent heat required for the mixing is very small or = in the two 

 phases." (S^"'^ communication). .518. 



— H. W. Bakhuis Roozeboom and A. TI. W. Aten : "The melting-point lines of 

 the system sulphur + chlorine." 599. 



— A. W. Visser : "Enzymactions considered as equilibria in a homogenous 

 system." 605. 



— A. Smits : "A contribution to the knowledge of the course of the decrease of 

 the vapour tension for aqueous solutions." 628. 



— A. F, Holleman : "The nitration of Benzene Huoride." 659. 



— Jan Eutten : "Description of an apparatus for regulating the pressure when 

 distilling under reduced pressure." 665. 



— P. VAN KoMBURGH : "On Ocimene." 700. 



— P. VAN KoMBURGH : "Additive compounds of s. triuitrobenzene." 702. 



— A. F. Holleman : "Action of hydrogen peroxyde on diketones 1,2 and on a- 

 ketonic acids." 715. 



— C. A. LoBRY DE Bruyn and L. K. Wolff: "Can the presence of the molecules 

 in solutions be proved by application of the optical method of Tyndall." 735. 



— .1. .1. Blanksma : "On the substitution of the core of Benzene." 735. 



— C. A. LoBRv DE Bruyn and K. P. van Calcar : "Changes of concentration in 

 and crystallisation from solutions by centrifugal power." 846. 



— C. L. JuNGlus : "Theoretical consideration concerning boundary reactions which 

 decline in two or more successive phases." 846. 



CHLORINE (The boiling-point curves of the system sulphur and). 63. 



— (The melting-point lines of the system sulphur +). 599. 



CIRCLE points at infinity (The singularities of the focal curve of a plane general curve 



touching the line at infinity a times and passing s times through each of the 



imaginary). 62 1 . 

 CLAUSius and van der Waals (On the e([uations of) for the mean length of path 



and the number of collisions. 787. 

 coal-tar-colours (The conduct of vegetal and animal fibers towards). 325, 

 COHEN (ERNST) and J. W' . CoMMELiN, The electromotive force of the Daniell- 



cells. 4. 

 COLLISIONS (On the equations of Clausius and van der Waals for the mean length 



of path and the number of). 787. 

 c o M M E L I N (j. w.) and Ernst Cohen. The electromotive force of the Daniell-cbHs. 4. 

 COMPLEXES of rays (On) in relation to a rational skew curve. 12. 

 COMPONENTS of a quadruplet (On the double refraction in a magnetic field near the). 19. 

 COMPOUNDS (On the) of unsaturated ketones with acids. 325. 



— (Absorption-compounds which may change into chemical) or solutions. 368. 



— (Abnormal solubility lines in binary mixtures owing to the existence of) in the 

 solution. 456. 



