100 GEOLOGY. 



Monte Argentaro from those of Campiglia, Catena, Gerfalco, &c., the 



former being below the Infra-Lias, the latter above it. E. B. T. 



Stefani, Carlo de. I Terreni subapennini dei dintorni di San-Miniato 



alTedesco. [Subapennine deposits.] At.Soc. Tosc.Sci.Nat.t.i.T^AO. 



. Natura geologica delle coUine della val di Nievole e delle 



valli di Lucca e di Bientina. [Greologj of the valleys of Nievale, 

 Lucca, and Bientina.] At. Soc. Tosc. Sci. Nat. t. i. p. 130. 



Sull' asse orografico della catena metallifera. [Axis of the 



Metalliferous Chain.] Pisa. 



Stoehr, Emilio. IS^otizie preliminari su le piante ed insetti fossili 



della formazione solfifera di Sicilia. [Fossils from the Sulphur 



deposits, &c.] Boll. R. Com. geol. Ital. pp. 284-287. 



The Insects and Plants would ally the Sicilian sulphur formation 



"with the Oeningen beds, and show that they were mostly deposited 



in fresh water. The writer classes the sulphur-beds as Messinian ; they 



are conformable with the Astian above. E. B. T. 



Struckmann, C. Ueber die Schichtenfolge des oberen Jura bei 

 Ahlem unweit Hannover und tiber das Vorkommen der Eooogyra 

 virgula im oberen Korallen-Oolith des weissen Jura daselbst. 

 [Upper Jurassic rocks in Hanover, &c.] Zeitsch. deutsch. geol. Qes. 

 Heft i. pp. 30-35. 



A new quarry near Ahlem has exposed a fine section of Upper 

 Jurassic rocks. Prom this and neighbouring localities the following 

 sequence is established : — 1. Oxford or Heersumer beds overlie the 

 Kelloway group ; 2. Lower beds of Coralline Oolite ; 3. Middle Coral- 

 line Oolite; 4. Upper Coralline ; 5. Lower Kimeridge beds ; 6. Middle 

 Kimeridge, with Pteroceras beds ; 7. Upper Kimeridge ; 8. Lower 

 Portland ; 9. Upper Portland. Sequence of beds from 1 to 9 exposed 

 within a section of 40 to 46 metres in thickness. The appearance of 

 Exogyra virgula in Upper Coralline Oolite, with Terehratula humeralis 

 ard Bhynchonella jpingids, is specially notable. F. W. R. 



• [^PP®^ Jurassic Rocks of Germany.] iV. JaTirh. Heft viii. 



pp. 861-864. 



Critical paper on Dr. Braun's work, " Der Ober- Jura im nordwest- 

 lichen Deutschland," especially dealing with his palaeontological deter- 

 minations. F. W. R. 



Striiver, Johannes. [Italian Yolcanoes.] N. Jalirb. Heft vi. 

 pp. 619, 620. 



Throws doubts on Ponzi's recognition of four periods of eruption in 

 Latium. Doubts whether the Peperino really represents a separate 

 (third) period of eruption. Has found leucite in ejected materials 

 from old volcanoes of Latium. A new quarry on the Yia Flamina in 

 volcanic tufa has yielded true Somma bombs with beautiful • zoned 

 structure. F. W. R. 



Stnder, B. [Swiss Geology.] N. Jahrh. Heft viii. pp. 854, 855. 



Two letters objecting to Tribolet's views on the Swiss " Eisenstein." 



