28 William Whitaker—The Red Chalk of Norfolk. 
not know whether any attempt has been made to examine the upper 
bed paleeontologically, but if not, I trust that our Lincolnshire and 
Yorkshire friends will set about it. 
There is a stratigraphical argument in favour of classing the 
Red with the White Chalk that "a fancy has not been noticed ; it is 
the fact of the parallelisin of the Red Chalk and the two lowest 
beds of the White Chalk (the sponge-bed and the Inoceramus-bed) 
not only along the Hunstanton section; but also in Lincolnshire, 
according to Judd. Now, if these three belong to two distinct forma- 
tions, it is passing strange that such extreme regularity should occur! 
You will probably agree with me, after what has been said, that 
the question of the age of the Red Chalk is not to be settled by an 
examination of the Hunstanton cliffs, even were that examination of 
the most detailed and searching kind. It is needful also to trace 
the bed along its outerop. and, more than this, to carry our researches 
to the beds both above and below its horizon, by which I mean not 
only where its outcrop can be seen, but also southward, where the 
red rock does not occur. The Red Chalk indeed must be studied 
as part of a series, and not as an independent bed. 
Let us now pass to a consideration of the evidence of the fossils. 
Though the kindness of my colleague Mr. Jukes-Browne, who has 
revised the published lists and brought them up to date for me, 
Iam enabled to lay before you the accompanying list, and also to 
quote these remarks, with which my friend has favoured me. 
‘“ Paleeontologically the Hunstanton Limestone has stronger affinities 
with the Gault than with any other formation; 380 of its fossils 
occur in the Gault and three others oceur as derived fossils in the 
Cambridge nodule-bed, thus making 388 altogether. Its affinities 
with the Chalk Marl are less strong, but nevertheless remarkable. 
It must be remarked however that none of the specially character- 
istic Chalk Marl fossils are found. Its affinities with the Upper 
Greensand (exclusive of the Blackdown Beds) are still weaker, and 
none of the characteristic Upper Greensand Brachiopoda or Cepha- 
lopoda occur. Generally speaking the commonest fossils are Gault 
species, which do not range up into the Chalk.” 
I have made the following analysis of the list of fossils, omitting 
unnamed species and doubtful species and occurrences :— 
Mollusea 
Total. only 
Number of species (and varieties) in the Hunstanton Red Rock...... (is 4k 
99° 55 these that occur imetime Galle. oo) sees li ceecteccecesessedts 35 26 
he Bee y 3 Upper Greensand .............00-- 23 16 
mati tes is 9 Cambridge nodule-bed ............ 29 22 
by ites 5 A OA ee ee uate: aio guae gue aoe Monee 32 18 
Pens tae v9 peculiar hottie deed Toc oe kee egsosespapiegaves 20 6 
ert Ta », that occur elsewhere in Gault only ............... 5 5 
ee 5 ‘5 ,», Gault and Cambridge 
wodule-bed only:/.s.40¢ig, -ebeeres=eeeeaes ‘| erates de> eeenereaet 10 7 
ss gs = Pe », Upper Greensand only... 1 0 
as ei gy Chalk only” <...2sesneeneas 11 6 
nee As range above the Gault......... soba mule regener 37 22 
os, Cae do not occur in Gault (or in the Cam- 
bridge nodule bed), but do occur in U.G.S or Chalk ...} 15 9 
