166 LIAS; OF ENGLAND AND WALES'. 
At Clifton, near Rugby, blue clays and sands were sunk 
through to a depth of 132 feet: the greater portion of the beds 
being Glacial Drift.* 
The brickyard at Braunston, situated on the north side of the 
canal, S.S.E. of the church, showed about 20 feet of bluish-grey 
clay with small cement- and ironstone- nodules, capped by gravel. 
Here I obtained the following fossils indicative of the zone of 
Ammonites Jamcsoni: 
Ammonites striatus. Inoceramus ventricosus. 
Valdani. Gryphsea sp. 
Blue clay is exposed by the cr.nal north of Willoughby Wharf, 
north of Braunston, and there Unicardium cardioides and some 
other fossils have been obtained. f Ammonites Henleyi, A. Ibex 
and Inoceramus rentricosus have been recorded from the Kilsby 
tunnel, J and A. capricornus has been found in a railway-cutting 
at Crick. 
A number of Foraminifera, from a brick-pit near Welton 
railway-station, have lately been described by Messrs. W. D. 
Crick and C. D. Sherborn. The clays at this spot evidently 
occur at the junction of the Lower and Middle Lias, for among 
the fossils recorded are Ammonites Valdani, A. trivialis, A. mar- 
garitatus, and A. Engelhardti.\\ 
In the country near, Daventry, as near Banbury, the junction 
between Lower and Middle Lias, has been drawn on the Geologi- 
cal Survey maps mainly on the evidence of physical features, lines 
of springs being taken to mark the upper limit of the Lower 
Lias beneath the more porous sandy shales of the Middle Lias : 
the lowest clayey beds of the Middle Lias with Ammonites mar- 
garitatus, have thus been often included with the Lower Lias.^l 
Wigston and Market Harborough. 
North and north-east of Rugby, from near Luttenvorth to 
Wigston Magna, the boundary ot the Lower Lias with the beds 
beneath <: is extremely uncertain, on account of the great thick- 
ness of Drift which obscures the underlying strata."** 
The junction of Lower Lias and Rhastic Beds has been exposed 
in the large brick-pit at Glen Parva to the south-east of Wigston. 
" 
* De Ranee, Kep. Brit. Assoc. for 1881, p. 313. 
f Rep. Rugby School Nat. Hist. Soc. for 1877, p. 46. 
j For account of Kilsby Tunnel, which is 1^ miles long, see Smiles' Life of 
Stephenson, chap. xiii. 
T. B. Oldhain, Report Rugby School Nat. Hist. Soc. for 1878, p. 54; 1879, 
pp.23, 54; 1880, p. 48. 
|| Journ. Northamptonsh. Nat. Hist. Soc., vol. vi. p. 208. 
^f See W. T. Aveline and R. Trench, Geology of part of Northamptonshire 
(Mem. Geol. Survey, Sheet 53 S.E.), p. 4. 
** H. H. Howell, in Geology of part of Leicestershire (Mem. Geol. Survey, 
Sheet 63 S.E.), p. 4. 
