Reports and Proceedings—Geological Society of London. 179 
sheets measure 22 by 30 inches over the work, that is, they are twice 
the size. In each case the price per sheet is 2s. 6d. 
Another new map issued by the Survey is Sheet 341 (West Fleet) 
of the New Series (colour-printed), 1 inch to 1 mile Map of England 
and Wales. It comprises a very small triangular bit (about 15 square 
miles) of Dorsetshire, including part of the Chesil Bank, and shows 
Oolitic rocks, from the Fuller’s Earth to the Portland Sand, Pleistocene 
Plateau Gravel, Recent and Post-Glacial Valley Gravel, Alluviun, 
and Shingle, price of map 1s. 6d. (dated 1905). B. Hosson. 
REHEPORTS AND PROCHEHEDINGS- 
GroLtogicaL Socrery oF Lonpon. 
I.—February 6th, 1907.—J. E. Marr, Se.D., F.R.S., Vice-President, 
in the Chair. 
The following communications were read :— 
1. ‘Note on the Cervical Vertebra of Zeuglodon from the Barton 
Clay of Barton Cliff (Hampshire).” By Charles William Andrews, 
ibeA., D.Se4 F.B.8.,'¥.G:8: 
The author gives a brief description of a cervical vertebra from the 
Barton Clay of Barton Cliff. It is referred provisionally to Zeuglodon 
Wanklyni, a species described in 1876 by Professor H. G. Seeley. 
The skull on which this description was founded is totally lost, so that 
this vertebra is the only bone of a Zeuglodon from the Barton Clay, 
and, with the possible exception of a vertebra from the Brockenhurst 
Beds (which is the type of Balenoptera Juddi), the only one found in 
the British Isles that now exists. 
2. ‘The Origin and Age of the Plateaus around Torquay.” By 
Alfred John Jukes-Browne, B.A., F.G.S. 
The existence of high-level plains or plateaus near Torquay has 
long been known, but since Pengelly’s time little attention seems to 
have been paid to them. Pengelly believed that there were several 
such plains at different levels, and thought that the time of their 
production was not very remote. On examination, however, his 
evidence breaks down, and the author regards the plateaus as portions 
of one inclined plane. 
The plateau-area has an extent of about three miles in length from 
north to south, and about two in width. Its highest level is found at 
the foot of the ridge which forms the watershed between Torbay and 
the estuary of the Teign. From the foot of this a platform stretches 
southward on each side of Barton at a level of from 340 to 340 feet ; 
south of this is the flat summit of Lummaton Hill (also about 
340 feet); and about a mile farther south are the flat-topped hills 
known as Yaddon and Daison Hills, both about 320 feet, and only 
separated by a narrow gorge cut by the little stream which flows from 
Barton to Torquay. 
Kast of these hills we find a plateau-area extending continuously 
through St. Marychurch and Babbacombe, for a distance of a mile’ and 
a half and an average width of half a mile, but cut off abruptly along 
