CONTENTS. 
PART II. 
II. The Cochlea of the Omithorhynchus platypus compared with that of ordinary 
Mammals and of Birds. By Urban Pritchard. M.D., F.R.C.S., Aural 
Surgeon to King’s College Hospital. Communicated by Professor Huxley, 
Sec.R.S .page 267 
III. On the Organization of the Fossil Plants of the Coed-Measures. —Part XI. By 
W. C. Williamson, F.P.S., Professor of Botany in the Victoria University 
[Owens College, Manchester ). 283 
IV. On the Induction of Electric Currents in Infinite Plates and Spherical Shells. 
By C. Niven, M.A., Professor of Natural Philosophy in the University of 
Aberdeen. Communicated by J. W. L. G-laisher, M.A., F.P.S. . . . 307 
V. Electrostatic Capacity of Glass, II., and of Liquids. By J. Hopkinson, M.A., 
D.Sc., F.P.S .355 
VI. On the Forty-eight Coordinates of a Cubic Curve in Space. By William 
Spottiswoode, P.R.S .375 
VII. On the Viscosity of Gases at High Exhaustions. By William Crookes, 
F.R.S. . 387 
Note on the Reduction of Mr. Crookes’s Experiments on the Decrement of the 
Arc of Vibration of a Mica Plate oscillating within a Bulb containing more or 
less Rarefied Gas. By Professor G. G. Stokes, Sec.R.S .435 
VIII. On the Electrical Resistance of Thin Liquid Films, with a revision of Newton’s 
Table of Colours. By A. W. Peinold, M.A., Professor of Physics in the Ployed 
Naval College, Greenwich, and A. W. Pltcker, M.A., Professor of Physics in 
the Yorkshire College, Leeds. Communicated by Professor W. Grylls Adams, 
F.R.S. .447 
