CONTENTS 
OF VOL. 176. 
PART I. 
I. On the Structure and Development of the Skull in the Mammalia .—Part IP 
Edentata. By William Kitchen Parker, F.R.S. . page 1 
II. On the Structure and Development of the Skull in the Mammalia .—Part III. 
Insectivora. By William Kitchen Parker, F.R.S. . 121 
PART II. 
III. On the connexion between Electric Current and the Electric and Magnetic 
Inductions in the surrounding feld. By J. PI. Poynting, M.A., late Fellow of 
Trinity College, Cambridge , Professor of Physics, Mason College, Birmingham. 
Communicated by Lord Rayleigh, M.A., D.C.L., F.R.S. ..... 277 
IV. On some Applications of Dynamical Principles to Physical Phenomena. By 
J. J. Thomson, M.A., F.R.S., Fellow of Trinity College, Cambridge, and 
Cavendish Professor of Experimental Physics . . . ,. 307 
V. On the Constant of Magnetic Rotation of Light in Bisulphide of Carbon. By 
Lord Rayleigh, M.A., D.C.L., F.R.S. . . . .. 343 
VI. The Theory of Continuous Calculating Machines and of a Mechanism of this 
class on a New Principle. By Professor H. S. Hele Shaw. Communicated 
by Professor Sir William Thomson, F.R.S. .......... 367 
VII. On Beds of Sponge-remains in the Lower and Upper Greensand of the South of 
England. By George Jennings Hinde, Ph.D., F.G.S. Communicated by 
Henry Woodward, LL.D., F.R.S., F.G.S. .403 
