144 Tlistory of the Sarsens. 
central vascular bundle, surrounded by a considerable thickness of 
soft parenchyma, consisting of uniform cells of short rectangular 
shape. The cells have not been distorted by pressure, but retain 
the size and form of the original tissue—which is a further evidence 
of the roots being preserved in the position in which they grew. 
There are not sufficient data in the specimens to enable one to de- 
termine with certainty what was tbe nature of the plants to which 
the roots belong; but it appears to me probable that they were 
monocotyledonous plants ; and they may have been Palms, a group 
represented in the Eocene Flora of England.” The fossil remains 
of palms from the Bracklesham Beds, the southern equivalents of the 
Bagshot Beds, are figured and described in Dixon’s “ Geology of 
Sussex,”? 2nd Edition, 1878, p. 166, pl. 17. 
Fig. 2. Impressions of the Root of a Palm (?) in a weathered Sarsen in a wall 
at Abury. Sketched by Col. C. C. King, F.G.S., in 1885. 
[This woodcut has been courteously lent by Dr. H. Woodward, 
F.R.S., Editor of the Geological Magazine.] 
