204 Reviews. [ Jan. 
counties may be introduced and become naturalized. The third 
Appendix consists of a table showing the geological distribution of 
plants in the county. From this table we gather that the number of 
plants known to occur on all strata is 117. The number confined 
to the valley alluvium, 7; to the superficial gravels, 19; to the 
Bagshot sands, 9; to the London clay, 14; to the Reading and Wool- 
wich beds, 2; to the chalk, 55; to the upper greensand and gault, 5 ; 
and to the lower greensand, 28. The last Appendix gives the relative 
proportion of the plants of the United Kingdom to those enumerated 
in the Surrey Flora, and also the proportion which the number of 
species in each natural order in Surrey bears to the total amount in 
the country. From this table we find that Surrey is deficient in the 
following natural orders :—Frankeniacee, Tamariscacee, Illecebracee, 
Plumbaginacee, Eleeagnacee, Aristolochiacee, Empetracee, and Erio- 
caulonee. It will at once be seen that none of these are common 
orders. 
The Flora of Surrey contains altogether 984 species, besides 65 well- 
marked varieties. The following five plants are believed to be pecu- 
liar to Surrey. Impatiens fulva, Teucrium Botrys, Lilium Martagon, 
Digitalis sanguinalis, and Buxus sempervirens. The latter, the common 
Box, is well known throughout England, but is not thoroughly natu- 
ralized in any other county. 
From what we have said, it must be seen that the Flora of Surrey 
is a most valuable and laborious work, and deserves to be in the hands 
not only of every lover of Natural History in the county of Surrey, but 
in those of every student of Botany throughout the country. We are 
glad to observe a good list of subscribers, and wish that our good 
opinion of the work may be the means of increasing its sale, and en- 
couraging Local Natural History societies to follow the good example 
of the Holmesdale Natural History Club. 
