PALZOZOIC DISTRICTS OF WEST SOMERSET. 535 
is here and there developed in directions parallel to the joints; in 
places the undulating surfaces of the joint-planes resemble the 
adjacent markings by the road, attributed by Prof. Jukes to ice 
mamillation. In the vicinity of this spot the Pickwell beds seem 
to form a syncline, as northerly dips are met with near the Abbey 
on the south. 
Near Oxgrove an appearance of northerly dip is probably occa- 
sioned by joints in the direction of the cleavage. At a quarter of a 
mile north of Oxgrove we appear to cross the junction between the 
Pickwell series and underlying division of greenish and grey slates 
of Morte and Ilfracombe (called after the typical localities in which 
their upper unfossiliferous and lower fossiliferous beds are respec- 
tively developed). Greyish schistose or irregular slates near Oat- 
way are apparently intersected by joint-planes dipping N. at 70°, 
whilst the bedding seems to follow the direction of the cleavage, 
dipping 8. 10° E. at 70°. In places the slaty laminz thicken into 
impersistent lenticular gritty bands. At Chilly Bridge characteristic 
Morte slates are exposed. Due east of Kent’s Mill the slates dip 
E. 20° S. at about 50°; a few chains to the north grey uneven or 
schistose slates, with vertical cleavage, seem to dip N. 20° W. at 
from 60° to 70°. At about one third of a mile north from the 
above a northerly dip is exhibited. 
At the junction of the Ordnance map sheets 20 and 21, grey grits 
and purplish slates are associated with greenish and bluish grey 
slates, proving a repetition of the Pickwell series, in a syncline, 
aided by fault. From the occurrence of Pickwell beds to the north 
and north-west, we have little hesitation in saying that the Morte 
slates of Chilly Bridge form an anticline, throwing off the Pickwell 
beds on the north and south, and passing under them on the west 
towards Drayton Farm. 
At Clammer irregular or schistose slates and slaty grits, with 
vertical cleavage, and in colour more allied to the Morte than the 
Pickwell beds *, seem to dip S. to 8. 20 E. at 50°. A contrary dip, 
N. 20 W. at 70°, is suggested by divisional planes, apparently joints. 
Near Clammer bedding and cleavage-planes appear to run in the 
same direction, but the joints seem to be vertical. From Clammer 
to Bridgetown slaty lilac or purplish grits and slates are associated 
with grey slates, and undoubtedly belong to the lower part of the 
Pickwell series, from evidence obtained to the west of the Exe 
yalley. Near Bridgetown lilac or purplish and grey slates, uni- 
formly coated with lichen, and presenting a grey weathered surface, 
are finely exposed in the road-cutting. The cleavage-planes, in- 
clined southward at 60° to 70°, are intersected by two or three im- 
persistent lines, apparently bedding-planes, giving a southerly dip 
of 13°. 
At Bridgetown the dip is 8. at about 65°; and the lower parts of 
the Pickwell-Down series, forming a passage into the Morte slates, 
rest upon them in strict conformity, the junction-line having been 
* Compare greenish grits and slaty beds near Drayton and Slade Farms in 
Pickwell series, Barle Valley, two miles above Dulverton. 
