the relative Age of Tertiary Deposits. 5381 
fused in equal numbers and proportions throughout, but occur 
at intervals in groups and genera. Thus at Cromer the pre- 
dominant and remarkable shells are Mactre; at Runton, Car- 
dia; nearer Clay, Murex striatus; at Bawdesey cliff, Murex 
reversus and Pectunculus; at the Beacon, Venus equalis; at Fe- 
lixstow, Pectunculus and Voluta Lamberti; south of Landguard 
cottage, Murex contrarius and Mya lata; at Bramerton and 
near Norwich are Murex striatus, Telling, and Balani.” There 
is no reference here made to Ramsholt, Sudbeurn, or Ald- 
borough; all the localities named in the above extract are 
those of the red or dilwvial crag. 
At page 23, Mr. Taylor observes, “ that after the forma- 
tion of the chalk the waters deposited the marine exuviee, and 
gave existence during the long period in which they occupied 
that portion of its former surface to those remarkable accumu- 
lations of crag shells which we now witness.” And again, at page 
29: “ A district bordering a hundred miles upon our eastern 
coast is occupied by an ancient marine deposit. ...... at one 
point exhibiting groups of shell-fish allied to those of the 
neighbouring sea, and at another composed of numerous ge- 
nera which are neither to be recognised living in any part of 
our globe or assimilated to the fossil shells of other forma- 
tions.” . 
I need not pursue Mr. Taylor’s views any further, but 
would refer the reader to his work or to his previous papers 
in the Philosophical Magazine. The above quotations fur- 
nish ample proof that he had not discovered the diluvial na- 
ture of the red crag, although it was that part of the forma- 
tion with which he was so intimately acquainted. 
In 1833, Mr. Samuel Woodward published an outline of 
the Geology of Norfolk, in which we are presented with a 
brief notice of the crag, confirming the previous observations 
made by Mr. Taylor. At page 19, Mr. W. mentions that “the 
crag district is a narrow tract running southward from the 
coast between Cromer and Weybourn, and passing’ Norwich 
in its progress towards the Suffolk coast, the great deposit of 
this formation.” Mr.) Woodward, without suspecting that the 
deposit which he is describing is déliviwm, proceeds to re- 
mark that “this tract appears to us to have been an estu 
in the antediluvian period... .. -Viewing the thick beds of 
testaceous remains, we cannot hesitate to admit that the sea 
occupied for a long period the part of Norfolk now under con- 
sideration.” 
Again, at page 21: Another point worthy of attention is 
the apparent agreement in the gregarious habits of the original 
occupiers of ae shells with the recent Mollusca, confining 
83H2 
