XVIII CO ANSTAE INGLES. 
Physics. Pu. Konnstamm: “On vapour-pressure lines of binary systems with widely 
divergent values of the vapour pressures of the components”. 96. 
— Pierre Martin: “The magneto-optic Kurr-effect in ferromagnetic compounds 
and metals”, IIT. 138. 
— Davin E. Rosserts: “The effect of temperature and transverse magnetisation 
on the resistance of graphite”. 148. 
— T. van Lomuizes: “Translation series in line spectra”. 156. 
— P. ZEEMAN and C. M. HoocEensoom: “Electric double refraction in some 
artificial clouds and vapours”. 3rd part. 178. 
— W. H. Kersom: “On the deduction of the equation of state from BOLTZMANN's 
entropy principle”. 240. 
— W. H. Kersom: “On the deduction from BoLTzMann’s entropy principle of 
the second virial-coefficient for material particles (in the limit rigid spheres of 
central symmetry) which exert central forces upon each other and for rigid 
spheres of central symmetry containing an electric doublet at their centre”. 256. 
— H. KAMERLINGH Onnes and C. A. CROMMELIN: “Isotherms of monatomic 
substances and their binary mixtures. XIII. The empirical reduced equation of 
state for argon”. 273. XIV. Calculation of some thermal quantities of argon. 952. 
— W.J. pe Haas: “Isotherms of diatomic gases and of their binary mixtures. X. 
Control measurements with the volumenometer of the compressibility of hydrogen 
at 20° C. 295. XI. „On determinations with the volumenometer of the compres- 
sibility of gases under small pressures and at low temperatures”. 299. 
— H. KAMERLINGH Onnes and Benet Beckman: “On the Harr-effect and the 
change in the resistance in a magnetic field at low temperatures”. I. 307. IL. 319 
III. 649. IV. 659. V. 664. VI. 981. VII. 988. VIII. 997. 
— H. KAMERLINGH ONNES and E, OosrerHuIs: “Magnetic researches. VI. On 
paramagnetism at low temperatures”, 322. VII. 965. 
— H. pu Bors: “A theory of polar armatures”. 330. 
— H. KAMERLINGH ONNes and W. J. pe Haas: “Isotherms of diatomic substances 
and of their binary mixtures. XII. The compressibility of hydrogen vapour at 
and below the boiling point”. 405. 
— W. H. Keesom: “On the second virial=coefffcient for diatomic gases’, 417. 
— P. ZEEMAN: “On the polarisation impressed upon light by transversing the 
slit of a spectroscope and some errors resulting therefrom”. 599, 
— J. D. van per Waats: “Contribution to the theory of binary systems”. XXI. 602. 
— J. J. van Laar: “The calculation of the thermodynamic potential of mixtures 
when a combination can take place between the components”. 614. 
— W. H. Kersom : “On the second virial-coefficient for monatomic gases and for, 
hydrogen below the Boyus- point”. 643 
— B. Marnras, H. KaMERLINGH ONNEs and C. A, arn “On the rectilinear 
diameter for argon”. 667. 960. 
— J. F. Srrks: “Measurements on the ultraviolet magnetic rotation in gases’. 773. 
— J. D. van DER Waals: “Some remarkable relations either accurate or approx= 
imative for different substances’. 903. 
