of the Hampshire Tertiary District. 
141 
found scattered through various scientific journals, I repeat in a 
tabular form those which I have adopted, showing the equiva- 
lents of each group of strata in the London district : — 
Upper Eocenes .• 
Middle Eocenes ' 
Lower Eocenes . 
Hampshire District. 
London District, 
Fluvic marine strata, 
commonly called Isle 
of Wight Freshwater 
series. 
• 
St. Helen's or Osborne series . . 
Wanting. 
Bagshot - 
series. 
iBournemouth sands and clays . . 
Upper Bagshots. 
Middle Bagshots. 
Lower Bagshots. 
Basement bed of London clay . . 
Represented by a thin band with) 
London clay. 
Woolwich beds. 
Reading beds. 
Thanet sands. 
Chalk. 
The upper Eocenes are wanting in the London district, unless, 
Avhich appears probable, the upper portion of the Upper Bagshot 
sands, which are of much greater thickness there than in Hamp- 
shire, are a marine representative of some of the Lleadon Hill 
marls, which become more sandy in their range north of the 
Isle of Wight. Outliers of the Lower Bagshots have long been 
known to exist on Highgate Hill, and have recently been dis- 
covered by Mr. Prestwich in the Isle of Sheppey and in Essex. 
Their presence attests the former extent of these strata and the 
amount of denudation to which they have been subject. 
