CONTENTS. ; Vil 
CORRELATION (The theory of Bravars (on errors in space) for polydimensional space, 
with applications to) (Continuation), 150. 
CORRESPONDING sTATEs (Contribution to the theory of), 840. 
CRITICAL POINT (Vapour pressures of oxygen and) of oxygen and nitrogen, 950. 
CRITICAL QUANTITIES (A new relation between the) and on the unity of all substances 
in their thermic behaviour, 451. 
— (Some remarks on the values of the) in case of association. 598. 
CROMMELIN (c. A). Isothermals of monatomic substances and their binary mix- 
tures. XVI. 275. 
— Isothermals of di-atomic substances and their binary mixtures. XVI. Vapour 
pressures of nitrogen between the critical point and the boiling point. 959. 
— E. Marutas and H. KaMERLINGH ONNes. The rectilinear diameter of nitrogen. 953. 
CRYSTAL SERIES (The metastable continuation of the mixed) of pseudo-components in 
connection with the phenomenon allotropy. LI. 672, 
CRYSTALS (On a new phenomenon accompanying the diffraction of RÖNTGEN rays in 
birefringent). 1204. 
cuBe (The different ways of floating of an homogeneous). 224, 
cusrcs (Some particular bilinear congruences of twisted). 1256. 
curves (Characteristic numbers for nets of algebraic). 935. 
— (Characteristic numbers for a triply infinite system of algebraic plane). 1055. 
DECOLORATION (The) of fuchsin-solutions by amorphous carbon. 1322. 
DEEP reflexes (Exaggeration of). 885. 
DENSITY (On the manner in which the susceptibility of paramagnetic substances depends 
on the). 110. 
— (Accidental deviations of) and opalescence at the critical point of a single 
substance. 793. 
DIAMETER (The rectilinear) of nitrogen. 953. / 
DIEPERINK (J. G.), N. WirpeBoemr and H. G. VAN DE SANDE BAKHUYZEN. Com- 
parison of the measuring bar used in the base measurement at Stroe with the 
Dutch Metre NO, 27. 300. 
DIFFRACTION (On a new phenomenon accompanying the) of Röntgen rays in bire- 
fringent crystals. 1204, 
DIFFUSION COEFFICIENT (The) of gases and the viscosity of gas-mixtures. 1068. 
DISCONTINUITIES (On apparent thermodynamic) in connection with the value of the 
quantity 4 for infinitely large volume. 606. 
DISSYMMETRY (Researches on PasTEvR’s principle of the connection between molecular 
and physical). I. 1217. 
DORSMAN (C.), H. KAMERLINGE Onnes and G. Horst. Isothermals of di-atomic 
substances and their binary mixtures. XV. Vapour pressures of oxygen and critical 
point of oxygen and nitrogen, 950. 
DOYER (LUCIE c.). Energy transformations during the germination of wheat-grains. 62. 
DROOGLEEVER FORTUYN (A. B). v. Fortuyn (A, B. DROOGLEEVER). 
DROSTE (J.). On the field of a single centre in EINSTEIN'S theory of gravi- 
tation. 998, 
