GlOUNST BSN (TS XXXIII 
TEMPERATURES (A thermo-electrical differential method for the determination 
of transition points of metals at comparatively low). 977. 
— (Improved form of a hydrogen vapour cryostat for) between —217° C. 
and —253°C. 1185. 
TENEBRIO MOLITOR (Technical experiences in the breeding of). 193. 
THAWING WEATHER (On the motion of ground water in frost and). 1321. 
THEORY of PicarD (On the). 585. 
— of quanta (On the principles of the). 1193. 
THERMO-ELECTRIC determination (The) of transition points. I. 687. 
THETANULLFUNCTION (Die Integralgleichung der elliptischen). 2e Note: All- 
gemeine Lösung. 817. 
THIN THREADS (On the observation and representation of). 705. 
THORN-BACK (Raja clavata) (An inquiry into the distribution of potassium- 
compounds in the electric organ of the). 842. 
Timor (On manganese nodules in mesozoic deep-sea deposits of Dutch). 997. 
TONIC LABYRINTHINE (On the effect of) and cervical-reflexes upon the eye- 
muscles. 509. 
TORNARIEN (Ueber westindische) nebst einer Uebersicht über die bisher 
bekannten tentaculaten Tornarien. 2. 
TRANSFORMATION (An involutory) of the rays of space which is defined by 
two involutory homologies. 462. 
TRANSFORMATIONEN (Ueber eineindeutige, stetige) von Flächen in sich. (7e 
Mitteilung). 232. 
TRANSITION-POINTS (The thermo-electric determination of) I. 687. 
— A thermo-electrical differential method for the determination of) of 
metals at comparatively low temperatures. 977. 
TRESLING (J.). Derivation of a formula for the temperature dependence of the 
velocity constants in gas reactions from a special image of the process. 143. 
TRKAL (V.) and P. EHRENFEsT. Deduction of the dissociation-eavilintiam 
from the theory of quanta and a calculation of the chemical constant 
based on this. 162. 
UNIVERSE (On the possibility of statistical equilibrium of the). 866. 
UNTERKÖRPER (Bestimmung der Klassenzahl aller) des Kreiskörpers der 
m-ten Einheitswurzeln. (Verbesserung). 1399. 
VEEN (H. J. van). Properties of congruences of rays. 1206. 
VEEN (Miss J. E. vaN). The identity of the genera Poloniella and Kloe- 
denella. 993. 
VeLocity (The) of the diazotisation reaction as a contribution to the 
problem of substitution in the benzene nucleus. 249. 
VELOCITY CONSTANTS (Derivation of a formula for the temperature depend- 
ence of the) in gas reactions from a special image of the process. 143. 
