70 DONATIONS. 



Dresden. Sitztings-Bericlite der naturwissenschaftlichen Gesell- 

 schaft Isis zu Dresden, January to March. 1871 (continued). 



Micliaelis. — Ueljer die Tlieorien der Erdbildung, 5. 



C. Neumann. — Ue"ber die Frage, 6b die Erde eine Veil- oder Halb- 

 kugel sei, 5. 



A. Steltzner. — Ueber mikroskopisclie Gesteinsuntersucbungen, 2. 



Florence. Bollettino del Eeale Comitato Geologico d'ltalia. Nos, 



5-8. May to August 1871. 



G. Seguenza. — Intorno le formazioni primarie e secondarie della pro- 



vincia di Messina, 97, 146. 

 I, Coccbi. — Della vera posizione stratigrafica dei Marnii saccaroidi 



delle Alpi Apuane, 113. 

 A. d'Acbiardi. — Su di alcuni minerali della Toscana non nienzionati 



da altri o incompletamente descritti, 134, 156. 

 . Sui Granati deUa Toscana, 166. 



Geological Magazine. Vol. viii. Nos. 7-9. July to September 

 1871. 



H. Woodward.— On tbe Structure of Trilobites. 289 (plate). 



E. Hull. — On tbe General Relations of tbe Drift Deposits of D'eland 



to tbose of Great Britain, 294. 

 G. A. Lebour. — Tbe Submergence of Is, in Western Brittany, 300. 



D, Mackintosb. — On tbe Drifts of tbe West and Soutb Borders of tbe 

 Lake-district &c., 303. 



A. G. Cameron. — Description of the recently discovered Caverns at 



Stainton, 312. 

 J. E. Taylor.— Tbe Relation of the Red to the Norwich Crag, 314. 

 H. Woodward.— On Volcanos, 337. 

 J. W. Judd. — On tbe Anomalous Growth of certain Fossil Oysters, 



355 (plate). 

 J. Ball. — Notice of Soundings in the Lake of Como to determine the 



Forms of its Bed, 359 (plate). 

 D. Jones. — On the Co-relation of certain Carboniferous Deposits with 



Coalbrookdale Coal-field, 363. 

 H. Woodward. — On the Discovery of a new Arachnide in the Coal- 

 measures of Dudley, 385 (plate). 

 R. L. Jack. — On " Wants" in Ironstone Seams, and their connection 



with Faults, 388, 

 O. A. L. Morch. — On the MoUusca of tbe Crag of Iceland, 391, 

 H. B. Woodward. — On Metamorphism of Strata in the Mendip Hills, 



400, 

 S.V.Wood, — Further Remarks on the Seq^uence of the Glacial Beds, 



406, 



C, E, de Ranee. — On the Glaciation of the North-west of England, 

 412. 



Prof, Hennessy. — ' On the Flotation of Sand by the Rising Tide,' 

 noticed, 316. • 



Geological Survey of Ireland, Explanatory Memoirs by Messrs. 

 Kinahan, Leonard, and Symes, noticed, 319, 



Proceedings of the British Naturalists' Society, vol. v., noticed, 320, 



' Report on Mines for the Province of Nova Scotia,' noticed, 371. 



J, Ball. — ' On tbe Cause of the Motion of Glaciers,' noticed, 372. 



D, Jones. — ' On the Spirorbis Limestone, Forest of Wyre,' noticed, 



