248 
Notes and Comments. 
that the basal transgressive bed contained constituents of 
variable character, including much oolitic material. 
speeton . 
' Along the northern border of the Wolds the formation 
is seen to change, and at Speeton there is a thin basal series 
of variegated marls only some 3 ft. 6 in. in thickness, overlain 
by about 30 feet of red and mottled nodular marly Chalk. 
These red strata were for long considered to be an expansion 
of the Hunstanton Red Rock. Jukes-Browne, who formerly 
adhered to this view, afterwards placed 28 feet of these beds 
in the Lower Chalk (varians -zone ) . On the occasion of our 
visit to this locality we were fortunate in seeing an exposure 
of the marls below this red Lower Chalk. We were able to 
confirm in the main the details given by Mr. Lamplugh in 
1889. We saw the glauconitic seam with eroded nodules 
resting directly on the black Aptian clay. Within the lowest 
foot we noticed the presence of Inoceramus sulcatus Park, and 
a few other lamellibranchs, all poorly preserved. The streak 
of dull reddish clay above this was readily recognised. In 
the uppermost 2 feet of marly shale were found numerous 
specimens of Iconeramus anglicus Woods and impressions of 
hoplitid ammonites. These marls belong to the Upper Gault, a 
fact proving that there is a non-sequence between them and the 
Aptian clays below, representing a considerable gap in time/ 
MR. LAMPLUGH'S VIEWS. 
f This is contrary to the view put forward by Mr. Lamplugh, 
who considers] that the Speeton Clays most probably form an un- 
broken series from the Kimmeridge Clay to the Upper Chalk. 
The base of the Spilsby Sandstone lies discordantly upon the 
Kimmeridge Clay in Lincolnshire, where the whole of tne 
Portland Beds are absent. A continuation of the same un- 
conformity, between the Upper Kimmeridge Clay and the 
base of the Lower Cretaceous clays, is evidently marked by 
Bed E at Speeton, where the Portland zones are likewise 
Unrepresented. The Lower Cretaceous clays of Speeton are 
thus limited below and above by non-sequences of some 
magnitude. It must be recognized that the transgressive 
Upper Gault, represented to the west of the Wolds and in 
Lincolnshire in the form of Red Rock, has here assumed a 
different aspect. In this connexion it may be remembered 
that at Holkham Hall, about 12 miles eastward from Hun- 
stanton, a comparable change has been recorded. A well- 
section showed the presence of clay, described as Gault, 
beneath a “ Red Marl/' The thin bed of smooth, red marly 
Chalk overlying the Upper Gault marls at Speeton, and 
forming a passage to the Lower Chalk, seems to have yielded 
no distinctive fossils. Our examination of the reddened and 
Naturalist 
