1 1 8 Origin of the British Flora. 



Late Glacial: — 



Hoxne, Suffolk (bed Q; Ballaugh, Isle of Man (bed C); 

 Corstorphine, near Edinburgh. 



Interglacial : — 



West Wittering, Sussex; Hitchin, Hertfordshire; South- 

 elmham, Suffolk. 



Early Glacial: — 



Beeston, Norfolk (at base of the Arctic Freshwater bed). 

 Preglacial (Cromer Forest-bed) : — 



Beeston, Sidestrand, Mundesley, in Norfolk. 



Rosa. 

 Neolithic: — 



Crossness, Essex (upper and lower peats) ; Redhall, 

 near Edinburgh (?). 



Interglacial : — 



West Wittering, Sussex ; Selsey, Sussex; Stone, Hamp- 

 shire; Grays, Essex; Shacklewell, London; Hoxne, Suffolk 

 (bed D). 



Prickles and achenes are not uncommon at several 

 localities. The achenes are always short in proportion to 

 their breadth, and very small; the prickles are generally 

 curved and small. I have seen nothing approaching to 

 the common living forms of R, canina^ L. ; and the fossils 

 more suggest a species with small globose fruits. 



Pyrus torminalis, Ehrh. 

 Interglacial : — 



Hitchin, Hertfordshire; Hoxne, Suffolk (bed D). 



