NOTES. 



Dechen, Geognosie, S. 573). In the alteration of chalk by contact with 

 basalt, the displacement of the particles in the process of crystallization or 

 granulation is the more remarkable, because Ehreuberg's microscopic investi- 

 gations have shewn that, m the unaltered state, the particles of chalk form an 

 infinity of small separate rings (Poggend. Ann. Bd. xxxix. S. 105.) See 

 also on the rings in arragonite deposited by solutions, Gustav Rose, Ann, 

 Bd. xlii. S. 354. 



C 277 ) p. 251. Beds of granular limestone in the granite at the Port cPOo 

 and on the Mont de Labourd, Charpentier, Constitution geol. des Pyrenees, 

 pp. 144, 146. 



C 278 ) p. 251. Leop. von Buch, Desc. des Canaries, p. 394 ; Fiedler, Reise 

 durch das Konigreich Griechenland, Th. II. S. 181, 190, and 516. 



C* 79 ) p. 251. I have before alluded to this remarkable passage in Origen'f 

 Philosophumena, cap. 14 (Opera, ed Delarue, T. i p. 893.) The whole 

 context renders it extremely improbable that Xenophanes meant an impression 

 of a laurel (rvirov SaQvijs), instead of an impression of a fish (rvirov OK^UTJS). 

 Delarue appears to me to be wrong in blaming Jacob Gronovius for substi- 

 tuting the latter reading. 



(2 80 ) p. 251. On the geological character of the environs of Carrara ("the 

 city of the moon," Strabo, lib. v. p. 222), see Savi, Osservazioni sui terreni 

 antichi Toscani, in the Nuovo Giornale de' Letterati di Pisa, No. 63 ; and 

 Hoffmann, in Karsten's Archiv fur Mineralogie, Bd. vi. S. 258 263, and 

 also his Geogn. Reise durch Italien, S. 244 265. 



C 281 ) p. 252. This hypothesis is that of an excellent and experienced 

 observer, Karl von Leouhard : see his Jahrbuch fur Mineralogie, 1834, S. 

 329 ; and Bernhard Cotta, Geognosie, S. 310. 



C 282 ) p 252. Leop. von Buch, Geognostische Briefe an Alex, von Hum- 

 boldt, 1824, S. 36 and 82; also in the Annales de Chimie, T. xxiii. p. 276, 

 and in the Abhandl. der Berliner Akad. aus den J. 1822 und 1823, S. 83 

 136 , H. von Dechen, Geognosie, S. 574576. 



O p. 254. Hoffmann, Geogn. Reise bearbeitet von H. von Dechen, S. 

 113119, 380-386 ; Poggend. Ann. der Physik, Bd. xxvi. S. 41. 



C 284 ) p. 254. Dufre'noy, in Me'moires ge'ologiques, T. ii. pp. 145 and 179. 



^ 85 ) p. 254. Humboldt, Essai geogn. sur le Giesement des Roches, p. 93 ; 

 Asie centrale, T. iii p. 532. 



C 86 ) p. 255. Elie de Beaumont, in the Annales des Sciences naturellea, 

 T. xv. p. 362 ; Murchison, Silurian System, p. 286. 



