XXXII CONTENTS 
SPRAY-ELECTRICITY (On) of solutions of electrolytes. 658. 
SPRONCK (C. H. H.) presents a paper of Mr. K. LANDSTEINER: “On the 
serological specificity of haemoglobin in different species of animals.” 1161. 
— presents a paper of Mr. K. LANDSTEINER: “On heterogenetic antigen.” 
1166. 
SpuYMAN (J.) and A. Smits. The thermo-electric determination of trans- 
ition points I. 687. 
— and A. Smits. A thermo-electrial differential method for the determination 
of transition points of metals at comparatively low temperatures. 977. 
STATISTICAL EQUILIBRIUM (On the possibility of) of the universe. 866. 
STIASNY (GUSTAV). Ueber westindische Tornarien nebst einer Ueber- 
sicht tiber die bisher bekannten tentaculaten Tornarien. 2. 
STtoMACcH (The significance of the concentration of calciumions for the 
movements of the) caused by stimulation of the N. vagus. 1262. 
STOMATA (A new method of recording the modifications in aperture of) 
(first comm.). 1303. 
STORM VAN LEEUWEN (W.) v. LEEUWEN (W. STORM VAN). 
STREAMING (Stationary) caused by a body in a fluid with friction. 1082. 
STRING-GALVANOMETER (The limit of sensitiveness of the). 613. 
SUBSTANCES (The propagation of light in moving, transparent, solid). III. 
Measurements on the Fizeau-effect in flint glass. 1402. 
SUBSTITUTION (The velocity of the diazotisation reaction as a contribution 
of the problem of) in the benzene nucleus. 249. 
SUGAR-PERCENTAGES (The interchange between bloodplasm on one hand 
and humor aqueus and cerebro-spinal fluid on the other hand, studied 
from their) and in connection with the problem of combined sugar. 1343. 
SULPHAEMOGLOBINAEMIA (Concerning). 1392. 
SULPHURCOMPOUNDS of ruthenium (Colloidal). 95. 
SUNDA-SEA (On the relation between the pleistocene glacial period and the 
origin of the) (Java- and South China-sea), and its influence on the 
distribution of coralreefs and on the land- and freshwater fauna. 395. 
SUPERPOSITION of elliptic pencils (Explanation of some interference curves 
of uniaxial and biaxial crystals by). 1223. 
SURFACES (On elementary) of the third order. (Stb comm.). 920. 
Taurus (The distance of the dark Nebulae in). 707. Further remarks. 720. 
TEMPERATURE (Observations of the) during solidification. 691. 
TEMPERATURE DEPENDENCE (Derivation of a formula for the) of the velocity 
constants in gas reactions from a special image of the process. 143. 
TEMPERATUREN (Einwirkung sehr niederer) auf die Moosfauna. 235. 
TEMPERATURES and volumes (On the equation of state for arbitrary). 
Analogy with PLANCK's formula. II. 887. 
