16 SCIENCE PROGRESS. 



Perner's first contribution towards the history of the 

 Bohemian graptolites (15). This work is a continuation of 

 Barrande's great work on the Bohemian Palaeozoic fauna, 

 and the appearance of the first part containing a description 

 of the structure of Monograptus and Retiolites illustrated 

 by admirable plates augurs well for the excellence of the 

 remainder of the work on the graptolites of this classic 



region. 



C— DEVONIAN ROCKS. 



Work on the Devonian rocks has been published in 

 both Old and New Worlds, and the subjects discussed in 

 the papers are of varied interest. 



Amongst the stratigraphical papers is one by Penecke 

 (16) which commences with an account of the literature 

 and a historical sketch of the Devonian of the area. The 

 beds rest on Neritenschiefer and Crinoidenkalk of (Upper) 

 Silurian age, and the following classification is given in 

 ascending order : — 



Quartzitstufe ( = F. of Bohemia). . . \ Lower 



Barrandei-schichten (with Heliolites Barrandei). j Devonian. 

 Kalkschiefer der Hubenhalt ( = Cultrijugatus- 



schichten ?)..... 

 Ca/c£o/a -schlchten ..... 

 Limestone with Cyathophyllum quadrigeminum 

 Goldf. Hochlautschkalk ( = Stringocephalenkalk). 



Gap. 

 Clymenienkalk Upper Devonian. 



The author gives fossil lists from the different fossili- 

 ferous horizons, and a description of new species. 



Devonian rocks are also described as occurring in the 

 Isle of Elba (17). Fossils were found in 1892 in the 

 "schistes lustres" of the east coast of the island. The 

 species are mostly new, but the general character of the 

 fauna, which includes Hyolithes, Beyrichia, Plumulites, 

 Goniatites, Bellerophon, Antkracoptera, Myalina, etc., in- 

 dicates that the rocks are Devonian, and probably Lower 

 Devonian. 



Middle 

 Devonian. 



