TRANSACTIONS OP TIIE SECIIONS. 
G5 
Xerasde basin of New South Wales. In a very large collection of plants examined 
hBtbose localities, it was stated that no trace existed of Lepvlodeiidron, Sigillaria, 
fnltria,StigmaTia, or any characteristic fossil of the ofrfcoal of Europe or America. 
lAi Count Keyserling’s Geology of the Norlh’easlern extremity of Jit/wm in 
Earope. By Sir U. I. Morciiison, F.R>S. 
%R. Murchison exhibited the new work, entitled “ Wisseiischaflliche Beobach- 
'ojfn iuf mer Reise in das Pttschoi)uland”i and explained its value in completing 
^KquiuDisnce of geologists with the great north-eastern angle of Russia in Europe, 
•hdi b tralered by the river Petchora. The geographical and nstroiiondcal obser- 
’’•^iatliis expedition (to a region previously known unly imperfectly to the 
JftiniB ibroogh the traders in fur), arc by M. I*. Von Krusenstern of the Imperial 
The geological outline of the present work (exemited in 1843} was communi- 
•ftltoSr l;. Murchison previous to the publication ot'the volumes on the geology 
■RimU and the Ural Mountains, and constitutes one uf the cliaptci*!) of that work ; 
hitlif td^ect ofthii corotnunicatioii waa to call attention to the additions which had 
^sred, first in regard to the physical and geological delineations of this wild 
'■'I'yia twu maps ; and secondly, to the numerous plates (23 in number) of the 
rroains of the Silurian, Devouiun, Carboniferous, Pertninn, arid Jurassic 
wemring in a hitherto unexplored region whUh extends over near 1 1® uf 
.■[ 60® to “ I® N. lat., and 25® of long., including the noithermnost range 
8 Ural Mountains. Sir R. Murchison stated, that although the eastern flank of 
^ tciiain had been touched upon at one ur two points by the authors, and notably 
•• lat. 66* enough had only just been done by them in this respect to connect in 
•PprOTimatc manner the structure of the northern end of the chain with that pre- 
this rocky territory extending 3® and 4® of lat. beyond the 
aitij "i. vegetation is now under tlic survey of a distinct expedition cooi- 
icipl Hofftnaii, and sent out under the nu-tpites of the Geographical 
f^h-rsburgh. The chief geological interest attached to the work of 
«iHr i' points alliuled to) is the determination of an 
Vtlr *J u ‘'®cks constituting the Tinian Ridge, which branching off from near 
/ji? N.N.W. direction on the left bank 
hiiA* •'T'* Tebeskuya, and is prolonged into the promontory of 
Ini V This ridee. ilivercent from the meridian direction of the 
^ i ccently deteruilned an important fragment of carbonife- 
® Island near Spitsbergen, on the north-western ilank of Scandinavia. 
ofi/oined by the Marchioness of Hn-slings from the Freshwater 
Ofth / 1^* Rordle Cliff's. By Professor Owbn, M.D., F.R.S. 
****Mef*^ * Marchioness of Hastings from the above-described 
some specimens indicative of a new genus of Pachyderm tPaio- 
between ihe Paleeotherium and had been 
^ *»!. ^ Owen at the Geological Society of London. Those 
n f by Lady Hustings to the Geological Section, consisted of two 
skulls of an extinct siiecics of crocodile, and the singularly 
••be freshwater tortoise (7Vio«yxV Professor Owen commented 
«n,i j crumbly character of the fossils when first extracted 
iu the preceding memoir, and on the skill and care with 
•^ed rr,Ti® foisils exhibited had been ro-adjusted, cemented, and 
S n«urc a_‘[ Peffrft >taie. All the requisite choracters for detCTroining 
*™''‘ties could oow he studied with the same facility as in the skulls 
crocodjitt. 
wMfvfrj-f’’® ^bree genera of Gavials (Gaw/alM), Alligator M/A- 
^‘ke {Crocoditua). The two specimens on the table differed 
n tiavials and ancient Teleosaurs in their broad and strong and com- 
