XXIV ONO ENTREE ENDS 
sM1D (Miss er. 1.) and C. A. CROMMELIN. Comparison of the pressure-balance of 
ScuArrer and Bupensere with the open, standard-gauge of the Leiden 
Physical Laboratory between 20 and 100 atmospheres, as a contribution to the 
theory of the pressure balance. 472. 
— H _KAMERLINGH Onnes and C. A. CROMMELIN. Isothermals of di-atomic 
substances and their binary mixtures. XVIII. 465. 
s MITS (a.). Molecular allotropy and phase-allotropy in organie chemistry. 346. 
— The apparent contradiction between theory and practice in the crystallisation 
of allotropic substances from different solvents, 363. 
— On critical endpoints in ternary systems. LIL. 793. 
— The P,X-figures of unary systems, according to the theory of allotropy. 1334. 
— and A. H. W. Aven. The application of the theory of allotropy to electro- 
motive equilibria LV. 1485. 
— and S. C. Boktiorst. On tension lines of the system phosphorus. IV. 106. 
— and C. A. Lopray pe Bruyn. ‘The periodic passivity of iron. 807. 
— G. Meier and R. Pu. Beek. On black phosphorus. I. 992. 
ICA 
NETHLAGE (Miss auDA). On the Brownian movement in gases. 1480, 
— and J. D. van per Waats Jr. The theory of the Brownian movement. 1322. 
sopium (The allotropy of). I. 91. 
sor (Double refractive) of vanadium-pentoxide, 1625. 
SOLAR PHENOMENA (On a possible influence of the FrrsNpr-coefticient on). 711. 
— (A test of the dispersion theory of) derived from measurements by ADaMs and 
Sr. Joun on the displacements of FrAUNHOFER lines in the spectra of the sun’s 
limb and of sun-spots. L691. 
SOUND (On measurement of). 165. 
— (The propagation of) in the atmosphere. 933. 
SPACE TRANSFORMATIONS (On the nature of the limiting surface for multiple). 1636. 
SPRCIFIC HEAT (The) at low temperatures. IT. 484. ILL. 1247. 
SPECTRAL LINES (Lhe width of). 134. 
sprcrroscore (The passage of light through the slit of a). 412. 
STANDARD-GAUGB (Comparison of the pressure balance of ScHArrer and BUDENBERG 
with the open) of the Leiden Physical Laboratory between 20 and 100 atmos- 
pheres, as a contribution to the theory of the pressure-balance. 472. 
srancu (Crystallised). 305. 
stars (On the influence exercised by the systematic connection between the parallax 
of the stars and their apparent distance from the galactic plane upon the 
determination of the precessional constant and of the systematic proper motions 
of the). 685. 
STARVATION (The influence of feeding and of) on the development of polyneuritis 
gallinarum. 1467. 
STOK (J. P VAN DER). The relation between meteorological conditions in the 
Netherlands and some cireumjacent places. Atmospheric pressure. 310, Difference 
of atmospheric pressure and wind. 321. 
