lIlKCELLAJfEOtm. Slw 



figuration with what ia known of the geology of the earth. There i» 

 no geological evidence to show that the moon had formerly seas and an 

 atmosphere. C. E. D. 



Renlaux, — . Temps prehistoriques. Coup d'oeil sur rhistoirc du 

 developpement des machines dans ITiumaUite. Pp. 36. Paris. 



Rosenhusch^ Herr H. Ein neues Mikroskop fUr mineralogische und 

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 logioal and petrographic work.] N. Jahrb. Heft v. pp. 504-513 ; 

 2 woodcuts. 



Routledge, Robert* Discoveries and Inventions of the Nineteeflth 

 Century. 8vo. London. 



Rock-boring, p. 245 (the Mont Cenis Tunnel, p. 247 ; the Channel 

 Tunnel, p. 260) ; Gold and Diamonds, p. 496 ; Mineral Combustibles 

 (Coal, p. 537 ; Petroleum, p. 543 ; Paraffin, p. 547). W. W. 



Royer, Madame Clemence. Les ages prehistoriques, leurs divisions, 

 leur succession, leurs transitions et leur duree. [Prehistoric Ages, 

 their Divisions, Order, Changes, aJid Duration.] Pp. 30. Paris. 



Rtiikin, Dr. J. Deucalion : Collected Studies of the Lapse of Waves 

 and the Life of Stones. 8vo. Orpington, Kent. Parts iii., iv. 



Chap, vii., pp. 97-139, The Iris of the Earth, pis. ii., iii. (Agates) ; 

 gems, arranged in order of the colours used in heraldry. Chap, viii., 

 pp. 140-151, The Alphabet ; notice of elements composing minerals. 

 Chap, ix., pp. 152-170, Fire and Water; flint and its varieties. Chap. 

 X., pp. 171-189, ** Thirty Years Since;" glaciers and glacier motion. 

 Chap, xi.. Of Silica (3 pp. only printed in part iv.). W. T. 



Rtitimeyer, L. Ucber die Art des Fortschritts in den organischen 

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Opening address of the president of the Swiss Science Association. 

 Notices the influence of the medium on life, comparing the diversity 

 of life in the sea with paucity of type in fresh water ; the latter probably 

 is derived from the former ; freshwater ganoids are persistent old types 

 with marine precursors. Early fossil mammals are smaller in size. 

 Discusses the origin of man's higher faculties in relation to progress in 

 creation. ^ E. B. T. 



Senft, Prof. F. Synopsis der Mineralogie und Geognosie. Abth. 2, 

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Vol. i, (see Geological Record for 1875, p. 258). Vol. ii. Geology : 

 considers first the atmosphere, waters, rivers, seas, and erosion by these 

 agents ; volcanoes and earthquakes ; pp. 5-347. Petrography : with 3 

 general tables, 3 for determination of crystalline rocks, and 4 for klastio 

 rocks, followed by details on each variety, pp. 352-677. Relation of 

 strata in earth-crust, mineral veins, &c. E. B. T. 



Sharp, Samuel. Rudiments of Geology. Ed. 2. Pp. iii, 1-204, 

 9 cuts, and folding table of formations. 8vo. London. 



