Fig. 2. — Glacially SxRiAThD Erratic from Mkdmerrv near Selsey 



(Portion of a Block wkk.hing upwards of 2 Tons). 



[From a photograph, half natural size, by Mr. J. J. H. Teall, F.R.S.] 



! 4 



3 + . 



J + 



Fig. 3. — Contour Map of a Portion of the South Downs between the 



Valley of the Adur and the Devil's Dyke. 



(Scale, I inch to I mile) 



Explanation of Tints. 

 = 0-100 feet 1= 100-200 feet 2 = 200- 500 feet 



3 = 300-400 feet 4=400-500 feet 5 = 500-600 feet 



6=600-700 feet 7 (black) = 7oo-8oo feet 



To face page 20. 



