892 
Wilson.—Plant Distribution in the 
The Alluvial Deposits. 
In the Faversham district several small areas of woodland occur on 
alluvial soils. In most cases these form portions of larger woods, of which 
the greater part is found on one or more of the soils already described. 
Two types of vegetation can usually be distinguished in these woods :— 
(a) The flora includes most of the species found in the woods on the 
Chalk and Clay with Flints and particularly resembles that found on the 
latter deposit. 
(b) The flora includes most of the species found in the woods on the 
Tertiary deposits and closely resembles that found on the Thanet Sand. 
It is highly probable that these differences in the vegetation depend 
on the origin of the alluvial deposit in question. A soil derived by the 
washing of Tertiary beds will in general agree in composition with the 
formation from which it originated. Similarly, an alluvial soil found at 
the bottom of a chalk slope will in all probability contain a large percentage 
of calcium carbonate. No analyses of these soils are at present available, 
but the matter will be further considered in a later communication. 
(a) Woods on alluvial soils possessing a flora allied to that of the 
Chalk and Clay with Flints. The following woods of this type have been 
investigated in the Faversham district:— 
Portions of Badgin, Judd’s, and Bysing Woods. 
In the first two woods each of the alluvial deposits in question is 
situated at the bottom of a chalk slope. In these areas only the shade 
flora has been investigated. In each of these cases the species making up 
the coppice growth are similar to those occurring on the Clay with Flints : 
Ash and Hazel predominate. The ground flora differs from that of the 
surrounding chalk soil in the increased amount of Mercurialis perennis , 
L., and Endymion nutans, Dum., and in the occurrence of Adoxa Moscha- 
tellina, L., a plant absent from the Chalk. 
In Judd’s Wood Ranunculus Ficaria , L., is abundant on the allu¬ 
vium, and Mnium undidahim, L., is occasionally found. In Bysing Wood 
small areas of alluvial soil are found in a deposit of Thanet Sand which 
lies in the close vicinity of the Chalk. On these areas the underwood 
principally consists of Chestnut ( Castanea saiiva , Mill.) and Hazel. 
Mercurialis perennis occurs in isolated patches, and Endymion nutans, 
Adoxa Moschatellina , and Anemone nemorosa are generally distributed. 
The light flora is intermediate in character between that of the Clay 
with Flints and Thanet Sand. The following plants are particularly 
abundant:— 
Lychnis dioica, L. Carduus palustris, L. 
Gnaphalium uliginosum, L. Echium vidgare, L. 
Dipsacus sylvestris, Huds. 
