CARBONIFEROUS VOLCANIC ROCKS OF SOMERSET 209 
In gardens west of the road running from Milton to Kew- 
stoke he instituted a series of diggings which showed that 
the “ trap bed ” was there in situ. It was also found by 
digging in the garden of the lodge just outside the wood on 
the western end of Worle Hill. “ Trap ” was also found 
in places within the wood on the same strike. These 
observations leave no doubt of the extension of the lava in 
this direction. One of us became acquainted (without 
any knowledge of Mr. Spencer George Perceval’s previous 
discovery) with the “ trap ” fragments, some of them very 
vesicular, which are scattered over the gardens in the 
north-west angle of the cross-tracks, one leading along 
the crest of the hill, the other crossing from Milton to 
Kewstoke. A cottager, who was digging in the garden, 
pointed out a strip running across the field where, he said, 
all the stones turned up in digging were of this kind. 
Another man in 1902 made a similar statement. From 
this field we have ourselves collected many fragments of 
lava and a few of a brecciated rock. Moreover, in 1894, 
at a spot 150 yards down the track leading to Kewstoke, 
one of us observed a small excavation in which unmistak- 
able volcanic ash was seen in situ. This exposure was 
shown at the time to Mr. A. C. Pass, then Secretary of the 
Geological Section of the Bristol Naturalists’ Society, 
who was satisfied as to the nature of the rock. Unfortu- 
nately, when we visited the spot in 1902, we found that 
the excavation had been walled in, stone-lined, and 
converted into a small pond. A note made in 1894 is here 
transcribed : — 
“ Volcanic ash in field [near track] leading down to Kewstoke 
Steps. Soft friable reddish beds, seemingly greener when not ex- 
posed (i.e. when dug into with hammer). Numerous vesicular lapilli 
up to I inch in diameter.” 
In 1903, round a small pond just above the upper ex- 
tremity of Kewstoke Steps, we found abundant fragments 
