XII CONTENTS 



KERSOM (w. H.) and Mrs. C. Nordstrom — van Leeuwen. Development of the third 

 virial coefficient for mnterial points (eventually rii>id spheres), which exert central 

 attracting forces on each other proportional with »— 5 or > — 6. 602. 



KIDNEYS (The conduct of the) towards some isomeric sugars (Glucose, Fructose, Ga- 

 lactose, Mannose and Saccharose, Maltose, Lactose). 548. 



KLEIN (f E L 1 x). Bemerkungeu iiber die Beziehungen des de SiTTER'schen koordi- 

 natensystems 13 zu der allge/neiiien Welt konstanter positiver Kriimmung. 614. 



KLUYVER (j. c.) presents a paper of J. G. van der Corput: "Tlie primitive 

 Divisor of «*— 1", 262. 



— presents a paper of Dr. J. Droste : "On integral equations connected with 

 differential equations". 1269. 



— On the evalutation of ?{2n-\-l). 446. 



KOLK MEYER (n. h.) and A. J. BiJL. Investigation by means of X-rays of the 

 crystal-structure of white and grey tin 1. 405. II. The structure of white tin. 

 494. III. The structure of grey tin. 501. 



KOOPMANS (A. n.) and G. Holst. The ionisation of argon. 1089. 



koordinatensystbms B (Beraerkungen iiber die Beziehungen des de SiTTER'schen) zu 

 der allgeraeinen Welt konstanter positiver Kriimmung. 614. 



m 



KREISKÖRPERS k\é J (Ueber die Teilkörper des). Ister Teil. 454. 2ter Teü. 758. 



3er Teil. 774. 

 KiiüMMUNG (Bemerkungen iiber die Beziehungen des de SiTTER'schen Koordinaten- 



syslems B zu der allgemeinen Welt konstanter positiver). 614. 

 KRÜTKOW (g.). Contribution to the theory of adiabatic invariants. 1112. 

 kuenen (j. p.) presents a paper of Mrs. T. Eurenfest-Afanassjewa : "An 



indeterminateness in the interpretation of the entropy as log W". 53. 



— presents a paper of D. Coster : "On the rotational oscillations of a cylinder 

 in an infinite incompressible liquid". 193. 



LAAR (j. J. van). On the Course of the Values of a and (^ for Hydrogen at Different 

 Temperatures and Volumes. III. 2. IV. 16. 



— On the Heat of Dissociation of Di atomic Gases in Connection with the Increased 

 Valency-Attractions V' A of the Free Atoms. 644. 



— On the Equation of State for Arbitrary Temperatures and Volumes. Analogy 

 with Planck's Formula. 1184. 



LIGHT (The Scattering of) by Irregular Eefraclion in the Sun. 115. 



— (On the diffraction of the) in the formation of halos. II. A research of the 

 colours observed in halo-phenomena. 119. 



LINEAR Quantities (On the direct analyses of the) belonging to the rotational group 



in three and four fundamental variables. 327. 

 LiauiD (Ou the rotational oscillations of a cylinder in an infinite incompressible). 193. 



— (On the Evaporation from a Circular Surface of a). 271. 



LIQUID CRYSTALS (Contributions to the study of). III. Melting and congelation-pheno- 

 mena with para-azoxy-anisol. 254. IV. A thermic Efiect of the Magnetic Field. 259. 



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