Former Distribution of British Plants. 119 
PykuS ARIA, Sm. 
Preglacial (Cromer Forest-bed) :— 
Pakefield, Suffolk (leaves). 
Pyrus AUCUPARIA, Gaert. 
Neolithic :— 
Caerwys, Flintshire. 
Recorded from the Pine, Oak, and Spruce Zones 
(Neolithic) in Sweden (Gunnar Andersson). 
PYRUS COMMUNIS, L. 
Neolithic :-— 
Crossness, Essex (upper and lower peats), (wood de- 
termined by Professor Marshall Ward). 
CRATEGUS OXYACANTHA, L. 
Neolithic :-— 
Barry Docks, Glamorgan; Crossness, Essex (upper 
and lower peats); Redhall, near Edinburgh; Hailes, near 
Edinburgh; Gayfield near Edinburgh. 
Interglacial :— 
Southelmham, Suffolk. 
Preglacial (Cromer Forest-bed) :— 
Overstrand, Norfolk. 
In the Swedish peat-mosses only the form Crategus 
monogyna occurs (Gunnar Andersson). 
SAXIFRAGA OPPOSITIFOLIA, L. 
Unknown fossil in Britain. 
Recorded from Deuben, in Saxony (Nathorst), asso- 
ciated with Salix herbacea, &c. 
