THE ORIGIN OF THE BRITISH FLORA. 443 
dome from Norway, and reaching as far sonth as the Thames. To 
this epoch, when the drainage of a large part of Europe was poured 
into the North Sea, but could not escape northward on account of the 
roli 
which was a second, th eae less severe, peg Late neo- 
lithic times, the land stood some sixty or one feet, pets its 
eal level, and the submerged forests ”’ ae med. 
In dealing with the ‘ Deposits containing Fossil Plants” 
sis dae V.) Mr. Reid points out that the best hunting ground 
s been in the deposits from comparatively small streams, where 
8 seeds are better preserved and more varied than in lacustri rine 
ed 
ous beds the m 
counties; Late-gla sal sn wsaihaced. Loealilie throughout England 
and Se otla nd ; sin N eolithic, including the “submerged forests ”’ 
and early peat mo Lists are given of the various species found 
at atl locality, "ie richest collection, numbering ninety-four 
species, being from West Wittering, Sussex. 
The last chapter pee an account arranged under the species, 
of the various beds in which each has been collected, including 
those recorded from Soandinavia and Germany, and not yet found 
Picea excelsa, and Naias minor, besides Natas pranlies wits h now 
occurs as a recent Pitesie Mr. Reid has other seeds not yet 
determined which he considers cannot belong to existing British 
species. Chelidonium na classed by Watson as a denizen, and 
Valerianella olitoria, queried by him as a native, are both recorded 
from the inter-glacial deposits ; and (ra/eopsis Tetrahit, queried as a 
native or colonist, is found in the late-glacial and neolithic deposits. 
A fruit from the inter- ago and pre-glacial deposits, which has 
been Siete under names / aradoxocarpus and Folliculites 
carinatus, is now idaautel as rea to Stratiotes aloides. 
list is of course supposed to represent the complete floras of 
the various periods. Most of the soft-seeded plants would onl 
occasionally leave any sti os 0 trace, and, from the nature of 
