PROCEEDINGS OF 



THE EOYAL SOCIETY. 



vol. xxiv. No. 165. 



Y^—- — 



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CONTENTS. N?% 7 <£>> 



■PZPQSYUy 



PAGE 

 December 9, 1875. 



I. On some Electro-magnetic Rotations of Bar-magnets and Conducting-wires 



on their Axes. By G. Gore, F.R.S 121 



II. On the Development of Lepas fascicularis and the " Archizoea" of Cirripedia. 

 By R. von Willemoes-Suhm, Ph.D., Naturalist to the ' Challenger ' Ex- 

 pedition . . . ■ 129 



III. Preliminary Remarks on the Development of some Pelagic Decapods. By R. 



von Willemoes-Suhm, Ph.D., Naturalist to the ' Challenger' Expedition 132 



December 16, 1875, 



I. On the Development of the Spinal Nerves in Elasmobranch Fishes. By 



F. M. Baleour, B.A., F.L.S., Fellow of Trinity College, Cambridge . . 135 



II. On the Structure and Development of the Skull in the Batrachia. — Part II. 



By Prof. W. K. Parker, F.R.S. ............... 136 



III. Preliminary Observations on the Locomotor System of Medusae. By G-. J. 



Romanes, M.A., F.L.S. . 143 



IY. Note on the Placentation of Hyrax. By William Turner, M.B. (Lond.), 



Professor of Anatomy, University of Edinburgh 151 



[For continuation of Contents see <±.th page of Wrapper.] 



