204 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Jan. 12, 
~and sand, capping the higher 
ground at Rugby and Clifton, 
and descending into the valley, 
where they increase in thick- 
ness; ¢,c, the supposed posi- 
tion of the Lower Lias clay on 
which the drift lies. 
In a section taken across the 
valley of the Avon, from the 
summit of the hill on which 
the town of Rugby stands to 
the Brownsover intrenchments, 
excavations made on different 
parts of the hill show that 
the Boulder-clay, with its as- 
sociated beds of gravel and 
sand probably extends some 
distance down its flanks. A 
boring made on the line of sec- 
tion near the river came upon 
the Lias at a depth of six feet 
from the surface. On the hill 
towards Brownsover the exis- 
tence of the Boulder-clay and 
other drift could only be in- 
ferred. The modern alluvium 
on each side of the river is the 
only freshwater deposit appa- 
rently existing thereabouts. 
Fig. 2 represents a typical 
section across the Avon valley, 
‘oTRYS sery 
"SUIBULOd UBITRULTIVU PUL ST[OYS YIM ‘UOAYW olf] tvou f yytee 
Beckford. 
‘palojyoog, avou ‘serdtes Jamo oy} JO spoq poyeposy “¢ ‘9 “g 
‘TUNANT[e Wapoy, *p 
‘SUIVUIOL TIBI[BUIUUVU PUB ST[OYS OULAVUT YIIM ZJlap [ROOT 
‘sop Fe souvysig—auysuajsoo10 yy ‘ausoyzdoug naw ‘uonp ayy fo han yA umm ay2 ssoxom uooog poonrdh—s ‘Sq 
from the summit of Bredon i 
Hill to the top of Cracombe & River 
Hill, which is taken along Z. pe 
such parts of the valley as illus- Bs {fiom 
trate in the best manner the ¢& aie 
relative distribution of the dif- F 
ferent classes of the superficial 4 
deposits. = 
g 
Provisional Classification of the 3 ix 
superficial Deposits of the 2.9 
Valley of the Avon and ad- 2 i 
joining districts*. : 3 
[=r 
: Pg 
Upper Series, ranging from 6 & 
430 feet to 300 feet above the oe 
a 
sea :— g 8 
* The letters refer to the locali- oe 
ties in the Table (p. 216); and the 5 
numbers denote the order of the suc- = aa 
cession of the beds from the surface ) ct 
of the ground downwards. as : 
BO Cracombe 
Hill. 
