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Mercury, Herr Von DECHEN on the occurrence in the Coal Forma- 
tion of Saarbriick of Ores of . 2.0... ...5..-4. 2. 33 
Meyer, Hermann Von. The Saurians of the Muschelkalk ...... 40 
The Reptiles of the Coal Formation .............t5.ees ol 
Middendorff, Herr Von. G. Von HELMERSEN on the Geological 
Observations;in Siberiajof} . 13-0.) . L102 A ee 49 
MiLne-Epwarps, M. Report on the Paleontological Researches 
of M. Marie Rouault m Brittany and Anjou .................. 35 
Molluscous Fauna of Scandinavia, M. Loven on the Migrations of. 48 
Mortort, A. Von. The Trebich Grotto near Trieste ............ 60 
Muschelkalk, H. Von Meyer on the Saurians of .............. 40 
NauMANN, Prof.C. F. On the probable Eruptive Origin of several 
kinds of Gneiss and Gneiss-pramite..........:....)-= =e 1 
Peat, M. Léo LEsQuEREUX on the Formation of, in the North of 
Burope 3.2 = Wass = cas ade cre sii ebel ate os ete ee er 29 
Persia, M. WoSKOBOINIKOW’S Travels in Northern ............ 32 
PeTTKo, Prof. V. On the vicinity of Schemnitz and Kremnitz .._ 61 
Phosphates, Prof. BiscHor¥ on the Formation of Mmeral ........ 24 
Phosphoric Acid, Prof. BiscHor on the occurrence of, in Lava.... 47 
Rhone, Prof. HEER on the Fossil Plants discovered on the Upper.. 64 
Rouault, M. Marie, M. Mitne-Epwarps’s Report on the Palzon- 
tological Researches of. ....... .. 2... ++ ++,. - =» - «er 35 - 
Scaccuti, A. On the Ejection of Leucite Crystals from Vesuvius. 31 
Schemnitz and Kremnitz, Prof. Von PeTtTKo on the viemity of.... 61 
Schwarzwald, M. FRoMHERz on the Structure of the ............ 27 
Siberia, Herr Von MippENDoRFrF’s Geological Observationsin .. 49 
Stassfurth, M. KarsTENn on the Rock-Salt Deposit at .......... 12 
Trebich Grotto near Trieste, A. Von Moruor on the ..'i eee 60 
Trilobites, M. Marie RouAULT’s Researches on .............-.. ; 35 
Ural and Siberia, Produce of Gold in 1846 inthe................ 25 
Veins, Von WEISSENBACH, Contributions to the Knowledge of .. 56 
WEISSENBACH, Herr Von. Contributions tothe KnowledgeofVems 56 
WIEBEL, M. Present and former extent of the Island of Heligoland 32 
WosKOBOINIKOw, M. Travels in Northern Persia ............ a2 
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