INDEX TO PART II. 
OF THE 
PHILOSOPHICAL TRANSACTIONS 
FOR THE YEAR 1881. 
B. 
Bottom let (J. T.). On the Thermal Conductivity of Water, 537. 
C. 
Calamostacuys . inneyana, 298. 
Coal-Measures, fossil plants of, 283 (see Williamson). 
Cochlea of Ornithorhynchus, compared with that of Mammals and Birds, 267. 
Conductivity, thermal, of water, 537. 
Crookes (W.). On the Viscosity of Gases at High Exhaustions, 387 (for contents see p. 387). 
Cubic curve in spr on the forty-eight coordinates of, 375. 
D. 
Darwin (G. H.). On the Tidal Eriction of a Planet attended by several Satellites, and on the Evolution 
of the Solar System, 491 (for contents see p. 491). 
E. 
Electric currents, induction of, 307. 
Electric discharge, resistance of air to, at different degrees of exhaustion, 406. 
Electrostatic capacity of glass, 355 ; of liquids, 369. 
4 C 2 
