CONTENTS, AT 
Suiits (w. u.). Selective absorption and anomalous scattering of light in extensive 
masses of gas. 881. 
— presents a paper of Mr. F. L. BerGanstus: “A new accurate formula for the 
computation of the self-inductance of a long coil wound with any number of 
layers”. 917. 
— presents a paper of Mr. H. G. CANNEGIETER: “Ionization of gases by light 
emitted from GrrssLERr tubes”. 1114. 
— The lines H and K in the spectrum of the various parts of the solar disk. 1263. 
— and B. J. van per Praars. Observations concerning anomalous dispersion of 
light in gases. Ist Communication. 1038. 
KAMERLINGI ONNES (H.) presents a paper of Mr.C. A. CROMMELIN: “Isotherms 
of monatomic gases and their binary mixtures. IV. Remarks on the preparation of 
argon. V. Vapour pressures above —140° C., critical temperature and critical 
pressure of argon”. 54. VI. “Coexisting liquid and vapour densities of argon; 
calculation of the critical density of argon”. 607. 
— Further experiments with liquid helium. 1093. 1274. 
— and C. A. CROMMELIN. Isotherms of monatomic gases and of their binary 
mixtures. VIL. Isotherms of argon between + 20° C. and —150° C. 614. IX. 
The behaviour of argon with regard to the law of corresponding states. 1012. 
— and E. Marutas. Rectilinear diameter for oxygen. 939 
KAPTEYN (w.) presents a paper of Dr. M. J. van Uven: “Infinitesimal iteration 
of reciprocal functions’. 202. 
— On the final integral occurring in Prof. Winp’s paper: “Diffraction of a single 
pulse wave by a slit, according to Kircuuorr’s theory”. 405. 
— On the centra of the integral curves which satisfy differential equations of the 
first order and the first degree. 1241. 
— On the integral equation of FREDHOLM. 734. 
KARYOKINESIS (On the structure of the Nucleus and) in Closterium Ehrenbergii Men. 365. 
KATZ (J. R.). Experimental researches on the analogy between swelling (imbibition) 
and mixing. 958. 975. 
KIRCHHOFF’s THEORY (Diffraction of a single pulse wave through a slit according 
to). 394. 
— (On the final integral occurring in Prof. Winp’s paper: “Diffraction of a single 
pulse wave by a slit, according to). 405, 
KLUYVER (J. c.). On the integrating of series term-by-term. 850. 
KOHLBRUGGE (J. H. F.). Acetifying air- and ricebacteria the cause of Polyncuritis 
gallinarum. 904. 
KOHNSTAMM (PH.). On osmotic temperatures and the kinetic signification of the 
thermodynamic potential. 778. 
— and L. 8. Ornsrerx. On Nernst’ theorem of heat. 700. 
— and F, E. C. Scnerrer. Thermodynamic potential and velocities of reaction. 
789. 
— and J. TrMMERMANs. On vapour-pressures in binary systems with partial misci- 
bility of the liquids. 865. Addendum. 957. 
