MISCELLANEOUS. 



353 



oldest writers to the latest paper published, including the scarcely 

 known writings of the Moorish authors of Spain. J. McP. 



Chambers's ENCYCLOP-aEDiA. Kevised ed. 10 vols. 8vo. London 

 and Edinburgh. 



The articles are not signed ; but a list of contributors is given. The 

 chief names connected with geology are W. Carruthers, Dr. R. Chambers, 

 Prof. J. Nicol, and W. PengeUy. • W. T. 



Chancottrtois, a. E. B. de. Presentation d'une boussole construite 

 par M. Dutrou. [Exhibition of a new Compass.] Bull. Soc. Geol. 

 France, 3 ser. t. i. pp. 346-349. 

 Description of the compass and clinometer (eclimetre) used by the 

 officers in charge of the Geological Survey of France. 



. Memoire sur la classification chronologique des formations. 



[Chronological classification of formations.] Compt. Kend. t. Ixxix. 



pp. 89-93, Abstract. 



Divides the geological scheme into the Preliminary ^ the PHmary^ the 



Secondary^ the Tertiary, and the Recent great groups of formations. 



The subdivisions are based on a theory of recurrence, in each of the 



great groups, of analogous palaeontological and lithological conditions. 



G. A. L. 



Systeme et mode d'application de la legende geologiquo 



generale de la carte detaillee de la Prance. [Description of the 

 system employed in fixing the signs in the Geological Map of 

 France.] 56 pp. tables. Ann. des Mines, 7 ser. vol. v. 

 A guide to the signs and modes of reference in the large geological 

 map of France, now in course of completion by the Government. 



Charpentier de Cossignt, — . La Terre, sa formation et sa consti- 

 tution actueUe. Notice k la portee des gens du monde. Pp. 93. 

 8vo. Paris. 



Contejean, Ch. fllements de Geologie et de Paleontologie. Pp. 747 ; 

 467 figures. 8vo. Paris. 



Divided into four parts. The first is cosmical ; the second contains a 

 physical description of the earth ; the third describes the present action 

 of geological agents ; the fourth deals with petrology, stratigraphical 

 geology, and palaeontology. The author uses the term ^yrospliere for 

 the molten matter beneath the solid crust of the earth. F. W. R. 



Dana, Prof. J D. Manual of Geology. New ed. 8vo. 



Differs from the last edition in being a sixth larger, though not 

 apparently so in the paging. The changes in nomenclature have been 

 noticed at p. 114 (the Primordial or Cambrian, Canadian, and Trenton 

 Periods making up the L. Silurian). Under " Carboniferous " the 

 relation of the Cardlocarpi and Cordaites to fruits and leaves of 

 Welwitschia is brought out (pp. 328, 330), and there is a discussion on 

 the alumina in coal and in Lycopods (pp. 365, 366). The reference of 

 the warm climate of the Miocene to a subsidence of the region of 



1874, 2 a 



