8 
ADVERTISEMENTS. 
TABLE OF CONTENTS. 
The Geology of the Severn Valley Railway. By G. E. Roberts, F.G.S. . 433 
On New Brachiopoda, and on the Development of the Loop in Terobratella. 
By C. Moore, F.G.S 433 
On a New Genus of Echinoderm, and Observations on the Genus Palaechinus. 
By Fokt-Majok Austin 446 
Gems of Private Collections, (Unio Valdensis) 448 
Researches on Pseudomorphs. By H. C. Salmon, F.G.S. . . . 396 
Proceedings of Geological Societies 408 
Notes and Queries 416 
Reviews 423 
Now Ready, Vol. III. of " The Geolqgist," with Ninety-Seven Illustrations, 
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burgh ; Charles Upham Shepard, JML.D., L.L.D., Prof of Chemistry in Medical 
College of South Carolina, and of Mineralogy in Amherst College. 
