NOTES. Ixxxvii 



C 305 ) p. 263. See Hermann von Meyer's ingenious considerations on the 

 organisation of the flying sanrians (Palseologica, S. 228 252). In the fossil 

 Pterodactylus crassirostris, which, as well as the longer known P. longirostris 

 (Ornithocephalus of Sommering), was found at Solenhofen, in the lithographic 

 slate of the upper Jurassic formation or oolite, Professor Goldfuss has even 

 discovered traces of the memhranous wing " with the impressions of tofts of 

 reserved hair, some of the hair being even an inch long." 



( 306 ) p. 264. Cuvier, Recherches sur les Ossemens fossiles, T. i. p. Hi. Ivii. 

 See also the geological scale of epochs in Phillips's Geology, 1837, p. 166 185. 

 CW) p. 265. Agassiz, Poissons fossiles, T. i. p. xxx. and T. iii. p. 152 ; 

 Buckland, Geology, Vol. i. p. 273277. 



(3 08 ) p. 265. Ehrenherg, iiher noch jetzt lehende Thierarten der Kreide- 

 bildung in den Abhandl. der Berliner Akad. aus dem J. 1839, S. 164. 



(3 09 ) p. 265. Valenciennes, in the Comptes rendus del'Acad. des Sciences, 

 T. vii. 1838, pt. ii. p. 580. 



C 310 ) p. 265. In the Weald-Clay; Beudant, Geologic, p. 173. The num- 

 ber of ornitholites increases in the gypsum of the tertiary formations. 

 (Cuvier, Ossemens fossiles, T. iii. p. 302328). 



P) p. 266. Leop. von Buch, in the Abdhandl. der Berl. Akad. 1830, 

 S. 135187. 



(3 12 ) p. 266. Quenstedt, Flozgebirge Wurtembergs, 1843, S. 135. 



( 313 ) p. 267. The same work, S. 13. 



( 314 ) p. 267. Murchison makes two divisions of the bunter sandstein, 

 the upper being the trias of Alberti, whilst of the lower division (to which 

 Elie de Beaumont's Vosges sandstone belongs) of the zechsteiii, and of the 

 todtliegende, he forms his Permian system. He makes the secondary forma- 

 tion begin with the upper trias, i. e. with the upper division of the German 

 bunten sandstein. The Permian system, the carboniferous or mountain lime- 

 stone, and the devonian and silurian strata, constitute his paleozoic strata. 

 In this system the chalk and the oolites are the upper, and the keuper, the 

 muschelkalk, and the hunter sandstein, are the lower secondary formations ; 

 the Permian system and the carboniferous limestone are the upper, and the 

 devonian and silurian strata are the lower palaeozoic formations. The bases of 

 this general classification are developed in the great work in which the indefa- 

 tigable British geologist designs to describe the geology of a large portion of 

 Eastern Europe. 



(3 15 ) p. 268. Cuvier, Ossemens fossiles, 1821, T. i. p. 157, 261, and 

 264 ; Humboldt, iiber die Hochebene von Bogota in der Deutschen Vierteljahrs- 

 Schrift, 1839, Btl. i.. S. 117. 



