Page:Transactions of the Natural History Society of Northumberland, Durham, and Newcastle-upon-Tyne (1867).djvu/329

Rh

(GEOLOGY).
This geological chapter having been written for a special object, and subordinate to an account of the botany, and chiefly moreover giving generalized results of my own researches, it seemed unnecessary to enter into the bibliography of our local geology. In passing I have mentioned the names of those who have contributed special information; and I hope hereafter, in a more extended memoir on the geology of Northumberland and the Borders, to go more fully into the subject. A few other references may be given here.

The genera recently added to the Ichthyology of the Coal Measures by Professor Owen, and referred to in page 16, have been described and illustrated by him in the "Transactions of the Odontological Society" for 1867. Mr. Atthey, however, in a paper recently read before the Tyneside Club, disputes the validity of most of these new genera; and his paper will, I understand, be printed in our "Transactions." Messrs. Hancock & Atthey have also, in the "Annals and Magazine of Natural History" for February, 1868, described six new species of Ctenodus, obtained from the shales connected with the Low Main Seam of Coal. This was also read at a meeting of the Club, and will be printed in the "Transactions." Little has been added to the Flora of the Newcastle Coal Measures since the time of Lindley and Hutton, whose "Fossil Flora," published from 1831 to 1837, furnishes descriptions of most of the known species. Witham, in his observations on Fossil Vegetables in 1831, and in his "Vegetable Fossils of Lennel Braes," explained the internal structures of some fossil plants,