CONTENTS. iii 



PAGE 



Art. XII. On the Anatomy and Physiology of Cordylophora ; 

 a contribution to our knowledge of the Tubularian 

 Zoophytes. By George James Allman, M.D., 

 M.R.I.A., Professor of Botany in the University 

 of Dublin, &c, . . . . 106 



XIII. On the Elasticity of Stone and Crystalline Bodies. 



By E. Hodgkinson, Esq., . . .108 



XIV. The Classification and Nomenclature of the Palseo- 



zoic Bocks of Great Britain. By Professor 

 Sedgwick, . . . . .110 



XV. On the Surface Temperature and Great Currents 

 of the North Atlantic and Northern Oceans. By 

 the Bev. Dr Scoresby, . . .114 



XVI. On the influence of Climate on Plants and Animals. 



By Dr Emmons of New York, . .118 



XVII. On the Origin of Crystalline Limestones. By Pro- 

 fessor A. Delesse, . . . .127 



XVIII. Biographical Sketch of Mr Hugh Edwin Strickland, 131 



XIX. Notice of an Attempt to Naturalize the Craw-Fish 

 (Astacus fiuviatilis) in the South of Scotland. 

 Communicated by Dr Fleming, . .136 



XX. On the apparent Visibility of Stars through the 

 Moon immediately before their Occultation. By 

 H. Edmonds Jun., Esq. Communicated by the 

 Author, . . . . .137 



XXI. On the Paragenetic Relations of Minerals, . 139 



