via PREFACE. 



oxplanation is due. The works of more especial interest, which have come 

 to hand in tlie interval, are : 



(iraptolitcs lie Bolienie. Bj J. Barrande. 



A paper on .Stephanocrimis. By Dr. F. Hcejier. 



A paper on Bracliiopoda. By M. DE Yerneuil and Mr. Davidson. 



Monographie des Polipicrs fossiles dcs Terrains pal;t:ozoi(juos. By Mjlne-Edwards and 



Jules Haime. 

 British Palicozoic Roclss and Fossils : Fart ii. By Sedgwick and M'Coy, 

 Die Versteineningen der Grauwackcn Fonnation in Sachsen, &o. Von Hans Bruno Geinitz. 



ITeft 1 : Ciraptolithcn. 



In the progress of this volume, I have been indebted to numerous friends 

 lor specimens of fossils, communicated to me for illustrating^ the Avork. In 

 all such cases, suitable credit has been givoi at the close of the description 

 of the fossil. I am, however, more especially under obligation to Col. E. 

 Jewett, formerly of Lockport, now of TJtica, tor many unique specimens, 

 particularly among the crinoid.s. I am likewise indebted to Dr. Worcester, 

 of Lockport, for several specimens in the Clinton and Niagara groups, and 

 to Mr. Gebhard for a large proportion of those from the Coralline limestone. 



I would also express my obligations to Mr. John Paterson, under whose 

 supervision the volume has passed through the press. 



