90 GEOLOGY. 



[Geological observations in Elba.] Boll. B. Com. geol. Ital. vii. 



pp. 403-410. 

 Enumerates the formations of the island. Shows that the iron -ores 

 occur at the base of the cavernous limestone which lies above the 

 quartzites ; similar ores occur on the mainland opposite in an identical 

 limestone and under similar circumstances, except that the formations 

 below differ. E. B. T. 



Ludwig, R. Braunkohle bei Messel. [Brown Coal, Messel.] Notizhl. 

 Ver. Erdk. Darmstadt, Eolg. 3, Heft 15, p. 1. 



Lundgren, B. Om Belemniterna i Sandkalken i SkRne. [Belem- 



nites in the " Sandkalk " (a subdivision of the Swedish Cretaceous) 



in Scania.] CEfv. K. Vet.-Alcad. Forh. ]N"o. 10, pp. 15-21. 



An account of the occurrence and fossiliferous character of the beds 



in which BeUmyiites mucronatus and B. suhventricosus are found. Notes 



as to the relative ages of the subdivisions of the Swedish Cretaceous 



beds are given. E. E. 



Macar, T. de. Sur les relations existant entre la composition et le 

 gisement des charbons du Bassin de Liege. [Relations between 

 the Composition and the Lie of the Coals of the Liege Coal-field.] 

 Ann. Assoc. Ing. Liege., ser. 2, t. vi. pp. 57-82. 

 Based on 250 analj^ses of coals from this region. The laws applicable 

 to ordinary coal-fields connecting chemical composition with geological 

 position do not hold in so disturbed a basin as that of Liege. Empiri- 

 cal rules of use in practice can, however, be arrived at even here. A. It. 



Macpherson, — . Sobre las Rocas eruptivas de la provincia de Cadiz 

 y de su semejanza con las Ophitas del Pirineo. [Eruptive Rocks 

 of the Province of Cadiz, &c.] Pp. 22., plate. Madrid. 



Maffei, E. Minas de Carbon de Aller en Asturias. [Coal-mines of 

 AUer in the Asturias.] Rev. Min. ser. B, t. ii. nos. 49-53, pp. 

 101,109. 



Magnin, A. Recherches geologiques, botaniques et statistiques sur 

 rimpaludisme dans la Dombes et le Miasme Paludeen. [Geolo- 

 gical, .... Researches on the Marsh- emanations of the Dombes 

 Plateau (near Lyons),] Pp. 120, plate. Paris. 



Maier, — . [Copper-mines of the Ural in the mining district of 

 Nijnetagilsk.] Gornoi Journ. voL iii. pp. 290-299 ; 3 pis. 

 (sections). 



Malaise, Prof. C. [Discovery of Oldhamia in the Devillian Beds of 

 Grand-Halleux.] Ann. Soc. Geol. Belg. t. iii. Bull. p. Ixx. 



Sur quelques fossiles du Diluvium. [Eossils (rolled) from 



the Drift.] Ann. Soc. Mai Belg. t. x. Bidl. pp. Iv, Ivi 



