THE 
QUARTERLY JOURNAL 
OF 
THE GEOLOGICAL SOCIETY OF LONDON. 
PROCEEDINGS 
OF 
THE GEOLOGICAL SOCIETY. 
JANUARY 26th, 1870. 
Thomas Daniel Bott, Esq., 2 Osberne Villas, Talfourd Road, 
Peckham ; Edwin Buckland Kemp-Welch, Esq., 3 Beaumont Ter- 
race, Bournemouth ; James Parkinson, Esq., F.C.S., Sarum House, 
Church Road, Upper Norwood, 8.; Henry Sewell, Esq., Villa del 
Valle, Mexico, and Thomas F. W. Walker, Esq., M.A., F.R.G.S., 
Athenzum Club, London, and 6 Brock Street, Bath, were elected 
Fellows of the Society. The Rev. Dr. Oswald Heer, of Zurich, was 
elected a Foreign Member of the Society. 
The following communication was read :— 
On the Crac or NorFork and assoctatEp Breps. By JosepH Prest- 
wicu, Hsq., F.R.S., President. 
(The publication of this Paper is deferred.) 
[ Abstract. ] 
The author commenced by referring to his last paper, in which 
he divided the Red Crag into two divisions—a lower one, of variable 
oblique-bedded strata, and an upper one, of sands passing up into the 
clay known as the Chillesford clay. In 1849 he had alluded to the 
possibility of this clay being synchronous with the Norwich Crag. 
He has since traced this upper or Chillesford division of the Red 
Crag northwards, with a view to determine its relation to the Nor- 
wich Crag. He has found it at various places inland; but the best 
exhibition of it occurs in the Easton Bavant Cliffs. He there 
found in it a group of shells similar to those at Chillesford, and 
under it the well-known bed of mammaliferous or Norwich Crag, 
with the usual shells. The author also showed that in this cliff and 
the one nearer Lowestoft traces of the Forest-bed clearly set in upon 
the Chillesford clay. He traced these beds at the base of Hor- 
ton Cliff, and then passed on to the well-known cliffs of Happis- 
VOL. XXVI,—PART I, x 
