( 311 ) 



Account of the Proceedings of the Geological Society of France 

 and Ireland for 1847. 



{Continued froin page 163.) 



Besides these communications there have been others, also pre- 

 senting much interest, such as the observations of M. Martins on 

 the mass of the Jungfrau, which M. Studer refers to gneiss, masses 

 of Umestone being included among it ; the note of M. Boue, referring 

 to a memoir of M. de Hauer on the Cephalopods of the shelly lime- 

 stone of Bleiberg, Carinthia, wherein three stages of cephalopods, 

 each characterised by its fossils, is considered to be distinguishable 

 in the Alps ; a notice by Desmoulin of fossils in flints, which he in- 

 fers are the remains in the south-west of France of upper chalk, 

 equivalent to that of Maestricht, the softer part of these beds having 

 been removed by denudation ; a notice by M. Viquesnel on the chalk 

 of Turkey; a note on the mode of occurrence of the sulphur in the 

 Soufriere of Guadaloupe, by M. Ch. Deville. We have also a note 

 by M. Boue on pseudomorphism arising from the disappearance of 

 crystals of rock-salt in rocks ; a notice and analysis of a hydrosilicate 

 of alumina, found at Montmorillon (Vienne), by MM. Damour and 

 Salvetat ; a note on the pisolitic limestone (of the Paris district) by 

 M. Hebert ; remarks by M. Paillette in illustration of notes on the 

 mines in the south of Spain, by M. PernoUet; reflections in favour 

 of the hypothesis of the central heat of the earth, by M. d'Omalius 

 d'Halloy ; a note by M. von Buch on some points connected with 

 the structure of Terebratulse, and on the range of nummulitic lime- 

 stones ; a description of a gigantic Orthoceratite, six English feet 

 long, from North America, by M. de Verneuil ; a notice of the occur- 

 rence of a cretaceous Terebratula in some tertiary marls near Cor- 

 bieres, these marls considei-ed equivalent with others full of creta- 

 ceous fossils in the Haute Garonne and Haute Pyrenees, by M. Ley- 

 merie. There are other notices and papers, by M. de Collegno, on 

 the classification of certain rocks in Italy ; on some peculiarities in 

 the exterior form of the ancient moraines of the Vosges, by M. Col- 

 lomb ; on the genus Palseotherium, by M. Pomel; a notice of the 

 rocks in the basin of the Adour, by M. Delbos ; a notice respecting 

 a geological map of the Subhercynian Hills, and an essay on the 

 geological topography of that country, by FrapoUi ; a note on the 

 mode of occurrence of the Iceland spar in Iceland, by M. Descloi- 

 zeaux ; and a note by M. Neree Boubee on the relation between the 

 nature of soils and the diff'erent antiquity of the alluvions in valleys 

 marked by diiferent stages or levels. 



It^hould be observed that the Bulletin of the Geological Society 



