NOTES. 



mates it appear very probable that both the extinct crater of Mosychlos and 

 the island of Chryse, the desert habitation of Philoctetes (Otfried Muller, 

 Minyer, S. 300), have been long swallowed up by the sea. Reefs and shoals 

 to the north-east of Lemnos still indicate the place where the JEgean Sea once 

 possessed an active volcano similar to .lEtna, Vesuvius, Stromboli, and Volcano. 

 [The last-named mountain is of the Lipari group of islands.] 



C 240 ) p. 234. Compare Reinwardt and Hoffmann, in Poggend. Ann. 

 Bd. xii. S. 607 ; Leop. von Buch, Descr. des lies Canaries, pp. 424 426. 

 The eruptions of argillaceous mud from Carguairazo, when that volcano was 

 destroyed in 1698, the Lodazales of Igualata and the Moya of Pelileo on the 

 table land of Quito, are volcanic phenomena of the same kind. 



O p. 236. In a profile of the district round Tezcuco, Totonilco, aud 

 Moran (Atlas geogr. et phys. PI. vii.), which I designed originally (1803) 

 for an inedited work (Pasigraphia geognostica destinada al uso de los Jovenes 

 del Colegio de Mineria de Mexico), I applied, at a later period (1832), the 

 term endogenous (generated in the interior) to erupted plutonic and volcanic 

 rocks, and exogenous (generated externally on the surface of the globe) to the 

 sedimentary rocks. In the graphical system which I adopted, the first men- 

 tioned class of rocks were indicated by an arrow directed upwards f , and the 

 exogenous by an arrow directed downwards ,/ . These marks appear to me 

 to be at least less unsightly, than the mode in which the eruption of masses of 

 basalt, porphyry, and syenite, and the penetration of sedimentary strata by 

 them, are often represented by figures of ascending veins, which are drawn in an 

 arbitrary manner, and with little conformity to nature. The names proposed 

 in the pasigraphico-geognostical section were taken from Decandolle's botanical 

 nomenclature endogenous for monocotyledonous, and exogenous for dycotyle- 

 donous plants ; Mohl's more accurate analysis of plants has, however, shewn 

 that it is not strictly and generally true, that monocotyledones increase from 

 within, and dycotyledones from without. (Link, Elementa philosophise Bota- 

 nicse, T. i. 1837, p. 287 ; Endlicher and Unger, Grundziige der Botanik, 

 1843, S. 89 ; and Jussieu, Traite de Botanique, T. i. p. 85.) The rocks 

 which I have called endogenous, are designated by Lyell, in his Principles of 

 Geology, 1833,V.iii.p. 374, by the characteristic expression of "netherformed" 

 or " hypogene rocks." 



P) p. 236 Compare Von Buch, iiber Dolomit als Gebirgsart, 1823, 

 S. 36 ; and the same writer in the Abhandl. der Akad. der Wissensch. zu 

 Berlin, 1842, pp. 58 and 63 ; and in the Jahrb. fiir wissenschaftliche 

 Kritik, 1840, p. 195 ; on the degree of fluidity to be attributed to plutonio 



