* 
806 British Association for the Advancement of Science. ; 
erto a vocabulary of about 400 words is all that we possessed of 
it, it will be admitted that this. native of Gambia has not been _ 
an unprofitable subject of geographical inquiry. 
Next was read a Sketch of the recent Russian Bapatitons to to 
Novaia Semlia, by Prof. Von Baer. | 
Lieut. Col. Don J. Velasquez de Leon gave a short account of 
a map of Mexico recently made by order of the Government. 
Capt. Washington, R. N. communicated an account of. in 
cent Expeditions to the Antarctic seas.. This paper was illustra- 
ted by a South circumpolar chart ona Jarge scale, showing the 
tracks of all former navigators to these seas, from Dirk Gherritz 
in 1599, to M. d’Urville in 1838; including those of ‘Tasman in 
1642, Cook in 1773, Bellingshausen in 1820, Weddell in 1822, 
Biseoe in 1831, and exhibiting a vast basin, nearly equal in ex- 
tent to the Atlantic ocean, unexplored ‘by any ship, British or 
foreign.. The writer pointed ‘out that the ice in these regions 
was far from stationary ; that Bellingshausen had sailed through 
a large space. within the parallel of 60°, where Biscoe found ice 
that he could not penetrate :-—that have d’Urville had lately 
found barriers of field-ice, Weddell, in 1822, had, advanced. with- 
out difficulty to the lat. “ef 744°, or within 16° of the pole ; and 
that it was evident from the accounts of all.former navigators, 
that there was no physical obstacle to reaching a high southern 
latitude, or, at any rate, to examining those spots which theory 
pointed out as the positions where ‘the southern magnetic poles 
will probably be found, The paper also mentioned the expedi- 
tion to the South Seas, which has just left this country fitted 
out by several merchants, but chiefly under the direction of that 
spirited individual, Mr. Enderby, whose orders were to proceed 
in search of anethehns land, and to attain as high a south latitude: 
as possible. 
Mr. Murchison gave an account of a Geologic map and sec- 
tions of the border counties of Eingland and Wales. 
_ Mr. Griffith gave an account of his Geological map of Ireland, 
and of two remarkable sections in the south of that country. - 
A paper on the siratfontion of rocks, by Mr. A jethessy, of New- 
castle, was next read. 
A short paper by Mr. Trimmer was read: on the occurrence of 
marine shells over the remains of Terrestrial Mammalia in Cefn 
Cave, in Denbighshire. The cave is in carboniferous limestone ; 
