CONTENTS (continued). 



PAGE 



III. Kemai'ks on the Cloaca and on the Copulatory Organs of the Aumiota. 



By Dr. Ctadow .... . 266 



IV. Electrolytic Conduction in Relation to Molecular Composition, Yalency, 



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 Theory of "Residual Affinity." By Heney E. Aemsteono, Ph.D., 

 F.R.S^,, Professor of Chemistry City and Guilds of London Central 

 Institution . . . . 268 



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