OCOPN LE NEES: xl 
of the deviations from the ideal gaslaws in aqueous solutions of salts on the 
solidifying and the boiling points”. 1036. 
HOLLEMAN (A. F.) presents a paper of Miss ADA Prins: „On critical end-points 
and the system ethane-naphtalene”. 1095. 
HOLST (G.) and H. KAMERLINGH Onnes. The measurement of very low temperatures. 
XXIV. The hydrogen and helium thermometers of constant volume down to the 
freezing point of hydrogen compared with each other and with the platinum- 
resistance thermometer, 501. 
— On the electrical resistance of pure metals. IX. 508. 
— Further experiments with liquid helium. M. 760. 
— H. KAMERLINGH Onnes and C. Dorsman. Isothermals of di-atomie substances 
and their binary mixtures. XV. Vapour pressures of oxygen and critical point 
of oxygen and nitrogen. 950. 
HOOGEWERFF (s.) presents a paper of Prof, W. Reipens: “Equilibria in the system 
Pb-S-O, the roasting reactionprocess. 703. 
HULSHOF (H.). On the thermodynamic potential as a kinetic quantity. Ist part. 85. 
HYDRATION (The influence of the) and of the deviations from the ideal gas-laws in 
aqueous solutions of salts on the solidifying and the boiling points. 1036. 
HYDROGEN (Measurements of isotherms of) at 20° C. and 13.95 C. 203. 
— (Measurements on the capillarity of liquid). 528, 
HYDROGEN ISOTHERMS (lhe) of 20° C. and of 15°.5 C. between 1 and 2200 atms. 217. 
Hydrostatics. D. J. Korrewrec: “The different ways of floating of an homogeneous 
cube”. 224. 
HYMANS VAN DEN BERGH (A. A.) and J. J. DE La FONTAINE Scu.urrer. The 
identification of traces of bilirubin in albuminous fluids. 807. 
INERTIA (On isostasy, the moments of) and the compression of the earth. 1295, 
INNERVATION (On the termination of the elilerent nerves in plain muscle-cells and 
its bearing on the sympathetic (accessory) ) of the striated muscle-fibre, 982. 
INTEGRAL EQUATIONS (On some). 286, . 
INTEGRAL-FORMULA (On an) of STIELTJEs. 829. 
INTERFERENCE-PHENOMENA (On) to be expected when Röntgen-rays pass through a 
di-atomic gas. 1184. 
INVOLUTION (A cubic) of the second class. 105. 
— (A triple) of the third class. 134. 
ISOMERIDES (4-Sulpho-propionie acid and its resolution into optically active). 653. 
ISOPRENE (A crystallized compound of) with sulphur dioxide. 585. 
tsostasy (On), the moments of inertia and the compression of the earth. 1295. 
ISOTHERMALS of di-atomic substances and their binary mixtures. XV. Vapour pressures 
of oxygen and critical point of oxygen and nitrogen. 950. XVI. Vapour-pressures 
of nitrogen between the critical point and the boiling point. 959. 
— of monatomic substances and their binary mixtures. XVI. 275. 
ISOTHERMS (The hydrogen) of 20° C. and of 15% C. between 1 and 2200 atms. 217. 
— of hydrogen (Measurements of) at 20° C, and 1595 C, 203. 
