CONTENTS, XV 
TERRESTRIAL MAGNETIC FACE (On spasms in the) at Batavia. 141, 202, 
SHALLIUMNITRATE (Formation and transformation of the double salt of Silvernitrate 
and). 468. 450. 
THEOREM of JoacuImMstHaL (The) of the normaicurves. 593. 
THEOREMS (New) on the roots of the functions U, (2). 196. 
THEORY (On the) of Lrppmann’s capillary electrometer. 108. 
— (On the) of the transition-cell of the third kind. (Part I), 334. 
— (The elementary) of the ZERMAN-eftect. 52. 
THERMODYNAMICS of standard cells (1st Part). 610. 
TIDAL CONSTANTS in the Lampong- and Sabangbay, Sumatra. 178. 
TIN (On the Enantiotropy of). 23. 77. IL. SI. 149, ILL 281. IV. 464, 
TONGUE (Some reflexes on the respiration in connection with Laporpr’s method, to 
restore by rhythmical traction of the), the respiration suppressed in narcosis. 640. 
TRANSITION CELL (On the theory of the) third kind. Part 1. 334, 
— ELEMENTS (sixth kind) (On a new kind of). 81. 153. 
TRISUBSTITUTED DERIVATIVES (The formation of) from disubstituted derivatives of 
Benzene. 468. 478. 
TWISTED CURVES (On rational). 421. 
vapour (Ou the critical isothermalline and the densities of saturated) and liquid in 
isopentane and carbon dioxide. 574. 588. 
VAPOURPHASE (The constitution of the) in the system: Water-Phenol, with one or 
with two Jiquidphases. 645. 
VAPOUR-PRESSURE (Determination of the diminution of) and of the elevation of the 
boilingpoint of dilute solutions. 635, 
VAPOUR TENSION (Determination of the decrease in the) of solutions by means of deter- 
mination of the increase in the boilingpoint, 407, 469. 
VARIABLE (Equations in which functions occur for different values of the indepen- 
dent). 534. 
VEENSTRA (S. L.). On the systematic corrections of the proper motions of the 
stars, contained in Auwers’-BRADLEY-Catalogue, and the coordinates of the Apex 
of the solar motion in space. 262. 
VEGETABLE BASE (Échinopsine, a new crystalline), 645. 
veLociTy (On the influence of water on the) of the formation of ether. 23. 71. 
VERSCHAFFELT (J. £.), On the critical isothermal line and the densities of saturated 
vapour and liquid in isopentane and earbondioxide. 574. 588. 
VRIES (JAN DE) presents a paper of Prof. L. GEGENBAUER: New theorems on 
the roots of the functions C” (z).” 196. 
— On twisted quinties of genus unity. 374. 
— On orthogonal comitants. 485. 
WAALS (J. D. VAN DER) presents a paper of N. Quint Gany.: „The determination 
of isothermals for mixtures of HCl and Clt.” 40. 
— presents a paper of E. H. J. Cunaeus: /The determination of the refractivity 
as a method for the investigation of the composition of co-existing phases in 
mixtures of acetone and ether.” 101. 
