GEOLOGY. 333 



On comparing the silicified wood found in the -western and eastern, 

 belts, Prof. R. had found their structure to be the same, and to agree very 

 nearly with the fossils figured by Witham, under the name of Peuce Hut- 

 tonia. As this particular structure does not appear to have been met Avith 

 below the Lias, and occurs in that formation, it furnishes another argu- 

 ment in favor of the Jurassic age of all these rocks. 



Prof. R. added, that he had not found in the New Red Sandstone of 

 Connecticut valley either the Posidonia or Cypris, although he had met 

 with obscure markings which he was inclined to refer to 'the latter. He 

 had, however, satisfied himself that one of the plants, from the vicinity of 

 Greenfield, in Massachusetts, was identical with the form in the Virginia 

 coal rocks referred to Lycopoclites, and probably L. "Williarnsonis, and 

 that, among the other very imperfect impressions associated with this, was 

 one which he regarded as the leaf of a Zsraite. 



On the whole, therefore, Prof. R. concluded that the additional fos- 

 sils from the coal-bearing rocks of Virginia and North Carolina served to 

 confirm the conclusion of their being of Jurassic date, and that the fossils 

 thus far found in the more western belt? and its extension through Penn- 

 sylvania and New Jersey, rendered it proper to remove it from the Trias, 

 and place it also in the Jurassic period, a little lower probably than the 

 eastern belts of North Carolina and Virginia ; and there would be little 

 doubt, he thought, that the same conclusion would apply to the New Red 

 Sandstone of the Connecticut valley. 



MASTODON AND ELEPHAS PRIMIGENIUS. 



A letter in the Comtes Rendus, by M. Zygomalas, from Samia, in 

 Greece, states that in the mountain of Antinitra immense numbers of the 

 bones of the mastodon have been discovered. Monsieur Z. also saw, in 

 the stones composing the fortress of Dubon Phourka, the bones of un- 

 known animals, and also fossil plants. The quantity of bones of the 

 mastodon exceed any thing hitherto known on the face of the globe, ac- 

 cording to this account. 



Fragments of the bones of the fossil elephant, in a good condition, were 

 discovered in the summer of 1853, at Zanesville, Ohio, on the line of the 

 Central Railroad. This is the third of the same species that has been dis- 

 covered in the same bank within a few years past, the leading features of 

 each being distinctly marked, so as to prove that three, at least, of these 

 extinct animals left their remains within the boundaries of this city. The 

 molar teeth, four in number, all that the species possess, were found in 

 the jaws sound and unbroken, and two weigh twenty pounds each, 

 and two fourteen pounds each. The tusks were not in as good condition, 

 one only being sound enough to bear moving. This one, eight feet in 

 length, measured at its base 26i inches in circumference, and at the point, 

 eight feet distant, where it is broken off, 16 inches in circumference, the 

 whole length of which was twelve feet or more. 



