SUPPLEMENT FOR 1874. 411 



tidae (Ammonites, Ancyloceras, JScaphites, etc.). These changes are 

 either in the mode of the ornamentation or in the spiral relation of the 

 whorl. The object is to point out causes which have contributed to 

 the manufacture of majiy species from characters really due to ago, size, 

 and other individual conditions. G. A. L, 



Reynes, Dr. P. Deux nouveaux mineraux de la mine du cap 



Garonne. [Two New Minerals from the Cap Garonne Mine.] 



Bull. Soc. Sd. Indust. Marseille, t. i. pp. 121-123. 



The new minerals are Fieldingite, a variable double sulphide of lead 



and copper, allied to Cuproplumbite and Alisonite ; and Gregite, a 



double sulphate of copper, mistaken for Lettsomite. These, with many 



other minerals, occur at the base of the Trias immediately above the red 



Permian shales, a few kilometres from Pradet near Toulon. G. A. L. 



. [The Variations, Lithological and Palaeontological, observable 



in the same Geological Period.] Ball. Soc. Sci. Indust. Marseille, 

 t. i, pp. 113-115. 

 Gives 3 cases illustrating the laws of varying sedimentation and the 

 geographical distribution of animals in Oolitic times, showing, 1, 

 Identity of sediments and fauna ; 2, Diversity of sediments with 

 identity of fauna ; and, 3, Diversity of both sediments and fauna ; all in 

 rocks of the same age. G. A. L. 



Roemer, Prof. F. Aus Schlesiens prahistorischer Zeit. [Prehistoric 

 Times in Silesia.] Verein filr das Museum schlesischer Alter- 

 thiimer in Breslau. 4to. Pp. 23, pi. 2. 



Rousset, A., and A. Pinet. Geographie du Jura. Topographic, 

 statistique, administration, histoire, agriculture, Industrie, com- 

 merce. [Geography of the Jura. Topography, Statistics, Agri- 

 culture, &c.] Pp. 130. 18mo. Paris. 



Contains some geological and mining information. 



Sagot, Prof. Generalites sur la Guyane. Configuration et nature 

 du sol, distribution des eaux, vegetation sauvage. [Guiana. Con- 

 figuration and Nature of the Soil, Hydrography, etc.] Pp. 35. 

 Cluny. 



Contains brief geological information. 



Sauvage, Dr. H. E. Memoire sur les Sauriens et les Crocodiliens 

 des Terrains Jurassiques de Boulogne-sur-Mer. Mem. Soc. OeoL 

 France, 2 ser. t. x. 6 plates. 

 The new generic and specific names of Morinosaurus tyjous are given 

 to a new Dinosaurian, and those of Hcematosaurus lanceolatus to a Cro- 

 codilian. The following species are new : — Cetiosaurus Rigauxi, Steneo- 

 samms Bouchardi, S. rndis, S. morinicus, Metriorhgnchus littoreus, 

 Machimosaurus hathonicus, M. interruptus, M. ferox, and M. Rigauxi. 



E. T. N. 



