DRAKE AND SHEPPARD : CLASSIFIED LIST OF ORGANIC REMAINS. 5 
It would be useful if similar lists were prepared for other 
divisions of the county. 
The lists are given under the following heads, and at the 
beginning of each is a bibliography : — 
1. — Post-glacial, including beds of silt, peat, and old lacus- 
trine deposits, resting upon the Boulder Clay. 
2. — Glacial, including boulder clay, the basement portion 
of which is fossiliferous ; the so-called " Bridlington 
Crag " ; the so-called " interglacial " gravels of 
Holderness ; and the deposits at Elloughton and 
Bielbecks. 
3. — Pre-glacial, the deposits beneath the Boulder Clay at 
Hessle and Sewerby. 
4. — The Upper Chalk of Flamborough Head and The 
Wolds. 
5. — The Middle Chalk of Flamborough Head and The 
Wolds. 
6. — The Lower Chalk at Speeton, Melton Bottoms, and in 
the railway cuttings near South Cave. 
7. — The Red Chalk exposed at Speeton, Melton, Welton, 
and the South Cave railway cuttings. 
8. — The Speeton Clay. 
9. — The Portlandian of Judd at Speeton. 
10. — The Kimeridge Clay at Speeton. 
11. — The Corallian Rocks at Langton Wold, North Grims- 
ton, and Settrington. 
12. — The Oxford Clay at South Cave. 
13. — The Kellaways Rock in the cutting at South Cave. 
14. — The Millepore OoHte at South Cave. 
15. — The Lias (Upper, Middle, and Lower) exposed near 
Market Weight on and North and South Cave. 
