CONTENTS 



TIN-ORE (On) ID the Island of Plores 409. 



TITAN (The longitude of Hyperion's pericentre and the mass of). 881. 



titan's eccentricity. (On the perturbations in the motion of Hyperion proportional to 



the first power of). 1164. 

 tonus and faradic tetanus. 941. 



— (Once more the innervation and the) of the striped muscles. 1238. 

 torus (Aufzahlung der periodischeu Transformationen des). 1352. 

 TRANSFORMATIONEN (Ueber eineiudeutige, stetige) von Flachen in sich. 6te Mittei- 



luiig. 707. 



— (Autzahlung der periodischen) des Torus. 1352. 



TUBERCLE BACTERIA of the Papilionaceae (The significance of the) for the host 

 plant. 188. 



TUNGSTEN LAYERS (On the influence of different substances on the absorption of light 

 by thin). 1078. 



ULTRA-VIOLET LIGHT (On the spontaneous transformation to a colloidal state of solu- 

 tions of odorous substances by exposure to). 131. 



UNMIXING (On Metastable) and the Classification of Binary Systems. 1055. 



UREASE and the radiation-theory of enzyme-action. T. 1126. II. 1307. 



VALENCY-ATTRACTIONS l^-l (On the Heat of Dissociation of Di-atomic Gases in Con- 

 nection with the Increased) of the Free Atoms. 644, 



VALUES of a and b (On the Course of the) for Hydrogen at Diflerent Temperatures 

 and Volumes. III. 2. IV. 16. 



VAPOUR-PRESSURES of oxygen and nitrogen for obtaining fixed points on the tempe- 

 rature-scale below 0° C. XXIX. On the measurement of very low temperatures. 656. 



VARIABILITY (The) with time of the distributions of Emulsion-particles. 92. 



VERSCHAFFELT (J. E.). On the measurement of surface tensions by means of 

 small drops or bubbles. 366. 



— On the shape of large liquid drops and gas-bubbles and the use made of them 

 for the measurement of capillary constants. 836. 



VERTEBRATES (The Sympathetic innervation of the cross-strialed muscle fibres 



of). 1227. 

 VIRIAL COEFFICIENT (Deduction of the third) for material points (eventually for rigid 



spheres), which exert central forces on each other. 593. 



— (Development of the third) for material points (eventually rigid spheres), which 

 exert central atltacting forces on each other proportional with ? — 5 or r— * . 602. 



VISSER (S. w.). On the difiraction ot the light in the formation of halos. 11. A re- 

 search of the colours observed in halo-phenomena. 119. 

 VOLCANOES (On the) in the Island of Tidore (VloUuccas). 983. 



— (Ou the Non-existence of Active) between Pantar and Damtnsr (East-Indian 

 archipelago), in Connection with the Tectonic Movements in this Region. 795. 



VOLTA-EFFECT (On the Significance of the) in Measurements of Electromotive Equilibria. 



562. 

 VOLVOX GLOBATOR (The egg-clcavagc of) and its relation to the movement of the 



adult form and to the cleavage types of Metazoa. 243. 



