Vill CONTENTS. 
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XXIV.—On the Structure and Arrangement of the Soft Parts in 
Euplectella aspergillum. By Professor Franz Emuarp 
ScHuize, Gratz. Communicated by Sir WyvILLe THomson, 
V.P.R.S.E. (Plate XVII), . : . 661 
XXV.—On Minding’s Theorem. By Professor Tair, . re fl) 
