Notices and Analyses, 197 



and Elie de Beaumont, Engineer^ of Mines. Vol. I. Paris, 

 1830. '-.^i^m 



This volume comprises four memoirs, two of which are very long. 

 They have been already inserted in the Annates des Mines ; but this 

 separate publication will put them within the reach of a greater 

 number of readers, who could not easily consult them in so extensive 

 a work. A real service is therefore conferred on geologists, in thus 

 affording an opportunity to those engaged in the study of the general 

 and special geology of France, of possessing the important memoirs, 

 which result from the researches of MM. Dufresnoy and Elie de 

 Beaumont. 



The memoirs contained in this volume are entitled : — 



1. Geological Observations on the different formations in Vosges 

 which separate the coal formation from the lias ; by M. Elie de 

 Beaumont. 



2. Memoir on the existence of gypsum, and different metalliferous 

 minerals in the upper part of the lias in the southwest of France ; 

 by M. Dufresnoy. 



3. General considerations on the central plateau of France, and par- 

 ticularly, on the secondary formations which cover the southern 

 declivities of the primitive mass which composes it; by M. 

 Dufresnoy. 



4. On the relations of the tertiary and volcanic formations of 

 Auvergne ; by M. Dufresnoy. 



Notices sur quelqiies points, &c. Notices on some points in 

 Mineralogy and Geology. By M. Voltz. Memoirs of the 

 Natural History Society of Strasbourg, Vol. I. 



1. Borate of Magnesia in the Keuper gypsum discovered by M. 

 Gaillardot near Luneville. 



2. Notice on the elevation of strata. 



3. Notice on the Mineral Spring of Sulz-les-Baines. 



M. Voltz gives the analysis of these waters by M. Berthier, and de- 

 scribes the geological disposition of the beds in which this spring 

 arises, which is remarkable, inasmuch as it corresponds to well 

 marked dislocations which accompany a necessarily very considerable 

 rising of the beds. This fact, according to M. Voltz, is common to 

 several other mineral springs. 



4. Observations on Fossil Vegetables. 



This notice is the announcement and summary of a more extended 

 memoir, whose object is to discuss and oppose some of the opinions 

 on fossil vegetables of M. Adolphe Brongniart. 



On the Occurrence of Chalk Flints in Banffshire. By James 

 Christie, Esq. Banff Institution. Ed, Neiv Phil, Journ, Jan. 

 1831. 



Some years ago, while examining the geognosy of the vicinity of Peter- 

 head, Professor Jameson's attention was directed to the chalk flints 

 found in that neighbourhood, by previous information. He traced 

 them extending over several miles of country, and frequently imbedded 

 in a reddish clay, resting on the granite of the district. These flints 

 contain sponges, alcyonia, echini, and other fossils of the chalk flint, 



