XIV COON TEs ha Sr 
SOLAR MOTION (On J. C. Kapreyn’s criticism of Arry’s method to determine the 
apex of the). 221. Reply to it. 232. 
SPACE S, (The elementary motion of). 218. 
SPECTROSCOPE (Some observations on the resolving power of the Michelson echelon). 2 #7. 
SPECTRUM of the chromosphere (On the origin of double lines in the), due to anoma- 
lous dispersion of the light from the photosphere. 193. 195. 
STARING and the coal-question of Southern-Limburg. 639. 
STEIN (J.). On J. C. Kapreyn’s criticism of Arry's method to determine the apex of 
the solar motion. 221. Reply by Prof. J. C. Kaprnyn. 232. 
STIGMAS (On the irritable) of Torenia Fournieri and Mimulus luteus and on means to 
prevent the germination of foreign pollen on the stigma. 184. | 
STIMULUS and effect (A new law concerning the relation of). I. 341. IL. 381. III. 469. 
sugars (Urea derivatives of), 214. 
SULPHONES (On the influence of different atoms and atomic groups on the conversion 
of aromatic sulphides into). 264. 
y-sURFACE (Contributions to the knowledge of vaN DER Waars’). V. The dependence 
of the plait-point constants on the composition in binary mixtures with small 
proportions of one of the components, 293. VI. The increase of pressure at 
condensation of a substance with small admixtures. 659. 
SURFACES (Right lines on) with multiple right lines. 577. 
TELEPHONIC APPARATUS (The effect of the induction coil in). L. 357. IL. 400. 
TEMPERATURE (A waterjacket of constant ordinary). 29. 
TEMPERATURES (On the measurement of very low). IV. 495. 
— (The determination of density with the piezometer of variable volume for low). 761. 
(The compressibility of hydrogen at 0°.0 C and 20°.0 C. determined by the piezo- 
meters with variable volume for low). 776. 
TERNARY systems. I. 448. LI. 539. III. 681. 
TETRA-and pentanitrophenol (On pentanitrophenylmethylnitramine and). 437. 
THEORY of the biquadratic rest (On the). 169. 
THERMOMETER (Comparison of the platinum thermometer with the hydrogen). 495. 
TIME FUNCTION (On the effect as a). 647. 
TIN (The Enantiotropy of). VII. 377. 
TORENIA FOURNIERI (On the irritable stigmas of) and Mimulus luteus and on means - 
to prevent the germination of foreign pollen on the stigma, 184. 
TRIOXYBUTYRIC ACID (Erythric acid) (Synthesis of). 77. 
TRUNKDERMATOMA (On function and structure of the). I. 266. II. 308. ILI. 509. 
UREA DERIVATIVES (Carbamides) of sugars. 214. 
VAES (F. J.). Factorisation of large numbers. I. 326. IL. 425. ILI. 501. 
VAPOUR-TENSIONS of mixtures of ether and chloroform. 156. 
VARIABLE SYSTEMS (On the motion of). I. 489. IT. 588. 
VESICLE (On the development of the entoderm, of Kuprrer’s) of the mesoderm of the 
head and of the infundibulum in Muraenoïds. 442. 
VINYLGLYCOLLIC ACID. See g-HYDROXYBUTENOIC ACID. 
