190 CARBONIFEROUS VOLCANIC ROCKS OF SOMERSET 
R^eALT 
rocks, and with their approximate horizon, concluding 
with an account of their petrology. 
3. In the same part of the Quarterly Journal ^ Mr. 
Boulton records a number of fresh observations on the 
Spring Cove section. 
The two latter papers have added to some extent to the 
field observations recorded in the Summary of Progress, 
and it has occurred to us that it would be useful to have 
the principal facts recorded in these various papers brought 
together in a convenient form, and especially that the 
details of the various sections should be presented in such 
a way as to afford to local geologists a convenient basis 
for field observation. This we are enabled to do through 
the kind permission of the Controller of His Majesty’s 
Stationery Office, of the Council of the Geological Society, 
of Sir Archibald Geikie, and of Messrs. A. Strahan and 
W. S. Boulton, to all of whom our best thanks are tendered. 
The Carboniferous volcanic rocks of the Bristol district 
occur (see map, p. 189) at the following localities — 
(1) Woodspring (Middle Hope) ; (2) Sprirg Cove, Weston- 
super-Mare ; (3) above T - rent Stoke, Milton Hill ; (4) Golden 
Combe ; (5) Uphill ; (6) near Cadbury Camp. At all the 
above localities, with the exception of UphiF and near 
Cadbury Camp, there is evidence of the occurrence of both 
lavas and tuffs. There is nothing to show whether the 
igneous rocks of Uphill and near Cadbury Camp are con- 
temporaneous or not, but with these exceptions and the 
possible further exception of Milton Hill, the igneous rocks 
are undoubtedly contemporaneous. 
By the help of Dr. Arthur Vaughan, who most kindly 
determined the fossils collected from the limestone associ- 
ated with the volcanic series at each locality, we were 
1 Vol. lx. p. 158-169. 
Note. — The maps accompanying j^this paper, on pages 189 and 
197, are reproduced by the kind permission of the Council of the 
Geological Society from the Quarterly J ournal. 
