[ iv ] 
IX. On the Tidal Friction of a Planet attended by severed Satellites, and on the 
Evolution of the Solar System. By G. H. Darwin, F.R.S. . . . page 491 
X. On the Thermal Conductivity of Water. By J. T. Bottomley. Communicated by 
Sir William Thomson, LL.D., F.R.S., Professor of Natural Philosophy in the 
University of Glasgow .. ,.537 
XI. Description of some Remains of the Gigantic Land-Lizard (Megalania prisca, 
Owen), from Australia. — Part III. By Professor Owen, C.B., F.R.S., dc. 547 
Index to Part II. 
557 
