steel 
By Professor T. Rupert Jones, FRS., F.G8., §e. 145 
A still more interesting specimen (Fig. 4) of root-marks in Sarsen 
stone is in ba Museum of Practical Geology, Jermyn Street, London; 
marked xIX 3 Mr. W. Cunnington, F.G.S., found it in 1872, on 
Lockeridge Dew; three miles west of Marlborough, and one mile 
north of the main road. The impression, 74in. long and fin. wide, 
represents the lower end of a tap-root, with numerous rootlets going 
off from it at angles varying from 5° to 30°. Some, as shown by 
the holes on the side of the hollow, are in a definite row, others are 
scattered; and at the lower end a group of twelve or more holes 
shows that the root terminated in a brush of rootlets. Some of the 
holes in the stone can be penetrated with a wire for several inches, 
Fig.3. A piece of Sarsen with sub-parallel and sub-cylindrical rootlets of Palm (?) 
Collected by T. Codrington, Esq., C.E., F.G.S., in Wiltshire. In the 
British Museum (Natural History). Reduced one-half. 
Whether some of the perpendicular rootlets, sometimes closely 
parallel, or nearly so, belong to water-plants, such as Zostera, or if 
all belonged to maritime palms, would be an interesting enquiry. 
Both the sand-banks, that are now sands with concretions, and the 
shingle, now the pebbly part of the sands, must have been laid down 
VOL. XXIII,—No. LXVILI. L 
