MISCELLANEOUS. 379 



Bigg, Rev. Arthur. On Tools used in very early times as evidenced 

 in Pre-historic Implements, &c. Journ. Soc. Arts, vol. xxiii. p. 783. 

 Eefcrs to Palaeolithic implements. 



Robertson, R. S. The Age of Stone, and the Troglodytes of Breck- 

 inridge County, Kentucky. Ann. Mejp. Smithson. Inst, for 1874, 

 pp. 367-369. 

 Describes the geology of the country about Hardinsburgh. In a 

 cavern near that place were found remains, apparently, of a people of 

 the dolichocephalic type, with flat receding foreheads. R. B. N. 



. Rothwell, R. P. The Coal Production of the United States in 1874. 



Trans. Amer. List. Min. Eng. vol. iii. pp. 446-449. 



Pennsylvania produces nearly half the bituminous coal miued in the 



United States. Next in importance come Ohio, Maryland, Illinois, 



and Indiana. R. B. N. 



Roudaire, Capt. Sur les travaux de la mission chargee d'etudier le 



projet de la mer interieure en Algerie. [The Work done by the 



Commission on the Inland Algerian Sea.] CoTnpt. Bend. t. Ixxx. 



pp. 1593-1596. 



The results of the levelling carried out in the district of the Algerine 



" Chotts " are given. The submergeable area is of about 6000 square 



kilometres in Algeria. In the central portions the depth below the 



level of the sea varies from 20 to 27 metres. JSTone of the fine oases 



of Souf would be submerged. Gr. A. L^ 



Ruolz, — de. Question des houilles. Mission de M. de Ruolz en 

 France et en Angleterre. [The Coal Question. M. de Ruolz's 

 Mission in France and in England.] 4 vols. Paris, 1872-1875. 



Sainte-Claire-Deville, Ch. Application de la methode d'Ampere a 

 la classification des Sciences geologiques. [Ampere's Method ap- 

 plied to the Classification of the Geological Sciences.] Eev. Sci. 

 p. 79. 



Sandberger, — . Die prahistorische Zeit im Maingebiete. [Pre- 

 historic Times in the Main Region.] Pp. 14. Wurzburg. 



Saporta, Count de. Variations de la temperature et de la flore 

 polaire pendant les epoques geologiques. [Variations of the Polar 

 Temperature and Flora during Geological Epochs.] liev. Oeol. 

 t. xii. pp. 190, 191. 



Sharp, Samuel. Rudiments of Geology. Pp. xii, 126 ; 3 woodcuts: 

 8vo. London. 



Part 1. Introductory, pp. 1-22. Part 2. Stratigraphical and Palae- 

 ontological, pp. 23-126 ; with a Table of Geological Formations. 

 Refers especially to English Geology. AV. W. 



