IV CON TIE LNT AS. 
CHLORINE (On the supply of sodium and) by the rivers to the sea, 388. 
CHLOROFORM (Vapour-tensions of mixtures of ether and). 156, 
CHLOROPHYLL-FUNCTION (Photobacteria as a reactive in the investigation of the). 45. 
COAL-QUESTION (STARING and the) of Southern-Limburg. 639. 
COHEN (ERNST). The Enantiotropy of Tin. VII. 377. 
COMPRESSIBILITY of hydrogen at 0°. 0 C, and 20°. 0C. determined by the piezometers 
with variable volume for low temperatures. 776. 
CONDENSATION (The increase of pressure at) of a substance with small admixtures, 659. 
CONFIGURATION of SEGRE (Considerations in reference to a). I. 203. IL. 251. 
conics (The number of) intersecting eight given right lines. L$1. 
CRYSTALS (A method for separating) from alloys. 758. 
CURVES of degree three (Analytical determination of the ninth point in which two), 
passing through eight given points, intersect each other. 103. 
DALFSEN (B. M. VAN) and Pu. KOHNsTAMM. Vapour-tensions of mixtures of 
ether and chloroform. 156. 
DECOMPOSITION (On the) of mercury nitrates by heating. 657. 
DENSITIES (The) of mixtures of hydrazine and water. 756. 
DENSITY (The determination of) with the piezometer of variable volume for low tem- 
peratures. 761. 
DIELECTRIC (Plane waves of light in an homogeneous, electrically and magnetically 
anisotropic). I. 49. II. 148, 
DIFFERENTIAL EQUATION (Special cases of MONGE’s). 21. 
— of Monee. 423. 
DISPERSION OF LIGHT (On the origin of double lines in the spectrum of the chromo- 
sphere, due to anomalous) from the photosphere. 193. 195. 
p1To (3, w.). The densities of mixtures of hydrazine and water. 756. 
DORP (W. A. VAN) and S. Hoocewerrr. On the influence of the position of atomgroups 
in aromatic compounds on the process of the reactions. 161. 
DUBOTS (EUG.). On the supply of sodium and chlorine by the rivers to the sea. 388. 
Dynamics. H. A. Lorentz: „Some considerations on the principles of dynamics in 
connexion with Hertz’s Prinzipien der Mechanik”. 713. 
EARTH (The intensity of radiation and the motion of the). 678. 
ECLIPSE (Preliminary report of the Dutch expedition to Karang Sago (Sumatra) for 
the observation of the total solar) of May 1901. 593. 
ECLIPSE-PARTY (On the results of the observations of the Dutch). 85. 
EFFECT (A new law concerning the relation of stimulus and). I. 341. IT. 381. III. 469. 
— (On the) as a time funtion. 647. 
ELECTRO-CAPILLARY CURVE (On the asymmetry of the). 560. 
ELEMENTARY MOTION (The) of space S,. 218. 
ENANTIOTROPY of Tin (The). VII. 377. 
ENGELMANN (TH. W.). The negative-inotropic influence of the nervus vagus on 
the heart. 162. 
ENTODERM (On the development of the), of Kuprrer’s vesicle, of the mesoderm of the 
head and of the infundibulum in Muraenoids. 442. 
ENTROPY (The principle of) in Physiology. 698. 706. 
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