CLAYS OF BOVET TEACET, DEVONSHIEE. 
1031 
northerly direction, rather east than west of true north, — that is, a current, or other 
agent, moving in a line nearly at right angles to that in which the sands and clays of the 
true Bovey beds travelled from Dartmoor — a fact, concurring with those previously 
mentioned, in favour of a great chronological interval between the “ Head ” and the 
deposit it covers. 
Nor are we without organic evidence of the lapse of time between these formations. 
During our exploration at Bovey, I had an opportunity of examining and measuring a 
section made by workmen digging clay, in the “Head,” on the Heathfield, about a 
quarter of a mile east of the pit. The results were as below. 
Beds. Thickness. 
ft. in. 
1 * 6 
2 2 6 
3 3 0 
4 4 0 
5 unknotra. 
Section 4, of the “ Head ” at Bovey Heathfield. 
Totals, 
ft. in. 
6 Peat. 
3 0 Saitd. — Fine, wliite, qnartzose. 
6 0 Clay and Saite. — In separate masses, but not distinctly stratified. The clay 
more abundant than tbe sand. 
10 0 Clay. — Very white. 
Sandy Clay. — With angular and subangular stones. 
Some time afterward we found a considerable number of dicotyledonous leaves, lyi ng 
in the white clay, nine feet below the surface of the plain, and immediately below them 
lay some large roots. Professor Heee assigns the leaves to a period much more modem 
than that represented by the lignite-beds, yet to one characterized by a “ colder climate 
than Devonshire has at the present day,” thus confirming Mr. Godwin- Austen’s opinion, 
that the “ Head” belongs to the “ period prior to the most recent change of climate ”‘f’. 
The position of the leaves is indicated in fig. 1, which is drawn on the scale of 0'2 inch 
to 1 foot. 
Fig. 1. 
* The beds in this section and in those which succeed, do not represent those which bear the same 
numerals in the pit sections. 
t Geol. Trans. 2nd Series, vol. vi. p. 437, &c. 
Leaves. 
Boots. 
