430 lamplugh: notes on coast between Bridlington and filey. 
and to satisfy themselves of the fact of the limitation of certain 
fossils to definite zones. This fact is of the highest importance 
in the correlation of the beds with those of other countries, as 
has recently been shown by Prof. A. Pavlow of Moscow, who has 
been able by means of the material collected in this section to work 
out the relationship existing between the beds of the same age 
throughout Northern Europe, and to prove at Speeton itself a most 
interesting alternation of northern and southern faunas. ( Bulletin 
de la Societe Imper. des Naturalistes de Moscou, A r os. 3 and 4- 1891. ) 
I have found it convenient to divide the Speeton Clays broadly 
into three zones by means of the Belemnites (with some subdivisions 
based on the Ammonites) as under — 
(B.) Zone of Bel. brunsvicensis. 
(C.) Zone of Bel. jaculum. 
(D.) Zone of Bel. lateralis. 
Besides these, there are (A) Marls with Bel. minimus overlying 
the beds B, and forming an upward passage into the Red Chalk ; 
while at the base of the series below D come, first, a thin band of 
Coprolite-nodules (E), and then the bituminous Kimeridge shales 
with Bel. Owenii (F). 
This interesting Speeton Series is soon cut out by pre-glacial 
erosion, and disappears under the drifts. At the base of the glacial 
deposits on Middle Cliff Ridge (see map), an estuarine shell- 
bed of muddy sand deserves examination. It seems to be of 
about the same age as the Buried-Cliff-Beds of Sewerby. (See Geol. 
Mag., dec. II, Vol. VIII., p. 2). Betv/een Speeton and Filey the 
cliffs are entirely composed of glacial deposits, which include, just 
above high-water mark in the neighbourhood of Mile Haven, some 
transported masses of Lower Lias shale with the original bedding 
still preserved. 
If the members ascend the escarpment at Speeton, they will 
notice a remarkable chain of mounds composed of sand and gravel, 
fringing the edge of the declivity. Speeton Windmill stands on one 
of these, and the Beacon on another, while others rest on the very 
summit of the sea-cliffs between Speeton and Buckton. These mounds 
belong to the glacial series ; and though they are made up in the 
