Cee aaa 
XXXI. Proceedings of Learned Societies. 
GEOLOGICAL SOCIETY. 
[Continued from vol. vii. p. 416. ] 
March 9th, 1904.—J. E. Marr, Sc.D., F.R.S., President, 
in the Chair. 
(THE following communications were read :— 
1. ‘On the probable Occurrence of an Kocene Outlier off the 
Cornish Coast.’ By Clement Reid, Esq., F.R.S., F.L.S., F.G.S. 
An extensive deposit of subangular Chalk-flints occurs near 
Marazion, opposite a deep and wide valley which connects St. Ives 
Bay and Mount’s Bay. ‘This valley, though containing at St. Erth 
Lower Pliocene beds, is shown to be of much earlier date, and is 
probably an Eocene river-valley. Eocene rivers seem to have 
radiated from Dartmoor westward as well as eastward. The 
flint-and-chert gravel corresponds closely with the Eocene gravel 
of Haldon, and is apparently derived from a deposit under the sea 
off St. Michael’s Mount. Continuing the direction of the Eocene 
valley seaward, the isolated mass of phonolite of the Wolf Rock is 
met with. The evidence suggests that, underlying the western 
part of the English Channel, an Eocene basin may occur comparable 
in importance with that of Hampshire. 
2. ‘The Valley of the Teign.’ By Alfred John Jukes-Browne, 
Esq., B.A., F.G.S. 
The Teign Valley is one of the most remarkable in the British 
Islands, because it is not a transverse valley preserving a general 
direction in spite of opposing ridges, nor is it a longitudinal valley 
running parallel to a dominant ridge, nor is it a simple combination 
of one with the other, as often happens ; but it apparently consists 
of parts of two transverse valleys linked by a longitudinal one. 
The Teign runs off Dartmoor through a gorge which takes an 
easterly direction, as if it were going to join the Exe; it is then 
deflected southward into what, with respect to the Permian 
escarpment, is a longitudinal valley; this ends in a low-lying 
plain, and from this plain it escapes eastward to the sea through 
a transverse valley, which has been cut across the ridge of Permian 
and Cretaceous rocks. 
Several attempts have been made to explain the anomalies of the 
course taken by the Teign; but none of them is satisfactory, 
because the writers have not sufficiently considered the probable 
conditions of the surface on which the river-valleys were originated, 
or the extent to which the older rocks around Dartmoor may have 
been covered by Cretaceous and Tertiary deposits. 
Phil. Mag. 8. 6. Vol. 8. No. 44. Aug. 1904. U 
