193 
of the Recent Flora of Britain . 
Betula alba, Linn. 
Wood, leaves, and seeds. Postglacial, passim Interglacial, 
Hailes and Cowden Glen. Preglacial (Cromer Forest-bed), 
passim. 
Betula nana, Linn. 
Leaves. A common species in beds associated with boulder 
clay. Postglacial, Bridlington (Nathorst), Holmpton, near 
Withernsea, Bovey Tracey (Heer). Interglacial, Airdrie. At 
base of the glacial deposits at Happisburgh in Norfolk. 
Alnus GLUTINOSA, Linn. 
Cones. Postglacial, Hornsea and Sand le Meer in Hol- 
derness; submerged peat of Albert and Tilbury Docks (Mr. 
Spurred). Interglacial, Hailes and Redhall. Preglacial 
(Cromer Forest-bed), at most localities. 
CORYLUS AVELLANA, Linn. 
Nuts. Postglacial, Sand le Meer in Holderness ; South- 
ampton Docks (from Mr. Whitaker) ; Albert Docks (from 
Mr. Spurred), &c. Interglacial, Hailes and Redhall. Preglacial 
(Cromer Forest-bed), Ostend and Pakefield. 
Quercus robur, Linn. 
Wood, leaves, and acorn-cups. Postglacial at many local- 
ities. Interglacial, Redhall. Preglacial (Cromer Forest-bed), 
at many localities. 
Castanea sativa, Mill. 
Mr. H. N. Ridley has found charcoal of this wood in a bed 
with palaeolithic implements between Crayford and Erith 1 . 
This is apparently the only record of the chestnut in a fossil 
state in this country. 
Fagus sylvatica, Linn. 
Leaves. Preglacial (Cromer Forest-bed), at Happisburgh. 
2 Journ. Bot. vol. xxiii. p. 253. 
