Mil. C. UlilU ON TIIK KI.OIIA OK TIIK CUOMEU KoUE.'iT-liKK. 191 
able amount of tho fossiliferous clay was obtained. This has 
yielded a number of unrecorded species, and the griulual increase 
of my collection of recent seeds has enabled me to work out tho 
ilora moro thoroughly than before. None of the new determina- 
tions have, however, been included in tho list unless endorsed by 
Mr. Carruthers or Mr. Ilidloy, who have also recognised several 
forms of which I liad no recent specimens for comparison. To 
them, and to the other officers of the Botanical Department at tho 
British Museum, I must express my thanks for the groat trouble 
they have taken in examining and verifying the determinations. 
^loro clay was obtained last December ; but this material as 
yet has only been partially examined. There are also seveml 
nnrccogni.sotl species left from previous collections, which in time it 
may be possible to determine. Ultimately, a moro exact know- 
ledge of tho British Pliocene tlora will be obtained ; but mean- 
while tho list given below moro than doubles tho number of 
species recorded from the Ci’omer Porest-bed. From other 
Pliocene beds in BriU^in no plant remains are yet known, except 
occasional pieces of drift wood in tho Crag, and a nodule of clay 
with an undetermined leaf, from tho Chillesford Clay at Easton 
Jfavent.* 
Tho only mode by which plants can be obtained from most parts 
of tho Cromer Forest-bed is by thoroughly drying masses of tho 
clay, and then letting them fall to pieces in a sieve in water. By 
this means abundance of seeds can be washed out of beds which 
at first sight appear almost unfossiliferous. The estuarine clays, 
however, are seldom worth searching, for though full of drift wood 
and twigs, and occasional fir-cones, small seeds and fruits are rare 
and much damaged. Thus, the majority of my specimens have been 
obtained from the thin “ Upper Fresh-water Bed,” and a consider- 
able number from the still more impersistent “Lower Fresh- water 
Bed,” while the thicker intervening mass of estuarine clay and 
lignite has yielded comparatively few forms — in fact little but 
forest trees. 
As a guide for those wishing to study the botany of the Cromer 
Forest-bed, a short note is given below of the botanical and 
lithological character of the beds at each locality which has been 
♦Prestwich, “Structure of the Crag-beds,” jiart ii. (Quart. Journ. Geol. 
Soc. vol. xxvii. p. 345). 
