TABLE OF CONTENTS. 



Page 



BoNNEY, Prof, T. G. On tlie so-called Diorite of Little Knott 

 (Cumberland), with further Remarks on the Occurrence of 

 Picrites in Wales. (Plate XVI.) 511 



Callaway, Dr. C. On the Granitic and Schistose Rocks of North- 

 ern Donegal 221 



Claypole, Prof. E. W. On the recent Discovery of Pteraspidian 



Fish in the Upper Silurian Rocks of North America 48 



Cole, G. A. J., Esq. On Hollow Spherulites and their Occurrence 



in Ancient British Layas. (Plate IV.) 162 



Collins, J. H., Esq. On the Geology of the Rio-Tinto Mines, with 

 some General Remarks on the Pyritic Region of the Sierra 

 Morena. (Plate VI.) 245 



Daweins, Prof. W. Boyd. On a Skull of Ovibos moschatus from the 



Sea-bottom 242 



DowNES, Rev. W. The Cretaceous Beds at Black Ven, near Lyme 

 Regis, with some Supplementary Remarks on the Blackdown 

 Beds 23 



Duncan, Prof. P. Mabtin. On the Structure of the Ambulacra 



of some Fossil Genera and Species of Regular Echinoidea 419 



* 

 Ettingshatjsen, Baron C. von. On the Fossil Flora of Sagor in 



Carniola 565 



Gardner, J. S., Esq; On the Lower Eocene Plant-beds of the 



Basaltic Formation of Ulster 82 



Jho, II Lih 



