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PALLADIUM (Note on the melting point of) and WreN’s constant co. 549. 
PANNEKOEK (A). Calculation of dates in the Babylonian tables of planets. 684. 
Pathology. ©. H. H. Spronck and Miss Wir. HAMBURGER: “On passive immunisa- 
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PERIODIC SYSTEM (On the fundamental values of the quantities 6 and p/a for different 
elements, in connection with the). If. 2. III. 287. IV. 295. 
Physics. J. J. van Laar: “On the fundamental values of the quantities 4 and g/a 
for different elements, in connection with the periodic system”. IL. 2. ILI. 287. 
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— P. Zeeman: “Direct optical measurement of the velocity at the axis in the apparatus 
for Fizeav’s experiment”. 125. 
— J. D. R. Scnerrer and F. E. C. Scuerrer: “On diffusion in solutions”. I, 148. 
— J. Drostr: “The field of a single centre in ErnsreiN’s theory of gravitation, 
and the motion of a particle in that field”. 197, 
— Bara. VAN DER Por Jr.: “The currents arising in z-coupled circuits when the 
primary current is suddenly broken or completed”. 225. 
— W. J. pe Haas and Mrs. G. L. pr Haas-Lorentz: “An experiment of 
Maxwew and Amprre’s molecular currents”. 248. 
— J. TresLING: “On the use of third degree terms in the energy of a deformed 
elastic body”. 281. 
— J. D. van DER Waats: “The increase of the quantity a of the equation of state 
for densities greater than the critical density”. 359, 
— C. M. Hoocensoom: “On the influence of an electric field on the light trans- 
mitted and dispersed by clouds”. 415. 
— J. Droste: “The field of z-moving centres in EINnsTEIN’s theory of gravita- 
tion”. 447. 
— J. M. Bureers: “Note on the model of the hydrogen-molecule of Bonr and 
Despre”. 480. 
— M. J. Huizinga: “Electrolytic phenomena of the molybdenite-detector”. 512. 
— J. M. Burcers: “Note on P. ScHErRER’s calculation of the entropy-constant”. 546. 
— G. Horsr and E. Oosrernuis: “Note on the melting point of palladium and 
WIEN’s constant co’. 549. 
— P. Enrenrest: “On adiabatic changes of a system in connection with the 
quantum theory”. 576. 
— S. WeBer and E! Oosreruuis: “On the electric resistance of thin films of 
metal”. 597. 
—- Mrs. E. I. HooeeNBoom Smrp: “Comparison of the Utrecht pressure balance of 
the van ’r Horr Laboratory with those of the van vaN per Waats-fund”. 649. 
— H. A. Lorentz: “Some remarks on the theory of monatomic gases”. 737. 
— H.A. Lorenrz : “On HaMILTON’s principle in EinsteiN’s theory of gravitation”. 751. 
