XXII 
PROCEEDINGS OF THE 
10. “ Notes on Badgers (Meles taxus) in Hertfordshire.” By A. 
T. Brett, M.D. ( Transactions , Yol. 1Y, p. 119.) 
11. “ Note on a Box-terrier catching an Eel.” By J. P. Gwynne. 
(Communicated by Hr. Brett.) ( Transactions , Yol. 1Y, p. 120.) 
Field Meeting, 15th May, 1886. 
WELWYN. 
Outliers of the Lower Tertiaries, consisting of the Woolwich and 
Beading Beds and the London Clay, are scattered over the Chalk 
beyond the north-western margin of the London Tertiary Basin, 
chiefly in a line running from north-east to south-west, a few miles 
from, and roughly parallel with, the edge of this basin. A few, 
however, are met with at a greater distance, thus attesting the 
former extension of the Tertiaries over a very large area from 
which they have been removed by denudation. Of the principal 
line of outliers, two are in the neighbourhood of Welwyn, one (the 
Ayot outlier) being to the south-west, and the other (the Datch- 
worth outlier) to the east of this town. The former of these it 
was the chief object of the present meeting to visit and examine. 
The members assembled at half-past eleven at Welwyn Station, 
where they were met by members of the Geologists’ Association of 
London, Mr. Hopkinson acting as Director for both Societies. 
A chalk-pit on the hill-side above and north of Tewin Water 
was first visited. The Chalk here, seen from its lines of flints to 
be the Upper Chalk, comes nearly to the surface. Having no 
covering of clay, “ pipes ” may be expected to occur in it; and an 
apparently interstratified bed of clayey sand, with worn black 
flints below it, was assumed to have been formed by the lateral 
spreading out of a “pipe” descending in an oblique direction, so 
that only this section of it was visible. 
Tewin Water Park, the seat of Mr. George Burnand, F.G.S., 
was then entered, and by his permission the pretty woodland walk 
by the side of the Biver Mimram was taken as far as the footpath, 
which, crossing it by a rustic wooden bridge, leads into the main 
road from Welwyn to Hertford. Beturning on this road towards 
Welwyn, a large gravel-pit, excavated in the hill-side to the south 
of the valley, was entered. The gravel is of Middle Glacial age, 
being the “ gravel of the lower plain ” of Professor Hughes. Here 
and there are seen in it patches of boulder-clay. Before leaving 
this pit the Director gave an exposition of the various views held 
with regard to the deposition of the glacial beds in this neighbour¬ 
hood, and the origin of the valleys, but as the subject has been 
fully discussed by Mr. Elsden in his paper on the “Post-Tertiary 
Deposits of Hertfordshire,” * it need not here be further alluded to. 
Passing by Digs well Water and under the Great Northern 
viaduct, Digs well Park was entered, and the church, dedicated to 
St. John the Evangelist, was visited. The walk was then con- 
* ‘ Trans. Herts Nat. Hist. Soc.,’ Yol. I, Part 3, p. 103. 
