TO ACCOMPANT SIR ARCHIBALD OEIKIE'S ANCIENT V^OLCAXOES 01'’ BRITAIN' 
CeamM- 
'’4fmm(u-. 
-\llysdalaa 
J lanrhvSdJc 
'LLmm 
tuff in 
xlhi h Uo. 
Jiitail rnaris B(^ 
'VeAUkiamniitfr^ 
!^Ut 
HniyfipaH 
Rhos<^\ 
oTjm^ys C 5 
31^01^ x/t 
i jleniO' 
CARNJL'RVON u 
94.1^ ^ _ f I. iJ 
fo,V>|l. nf ,') 
ji“ - JV-''^ ' V 
LV»w .*»m 7 i '.aim , 4 "' : 
/JiA}ff hufitHi 
l.ff'14‘ ■ >' t 
rheKj 
Z' XU 
^ .-. r '^-.ves®'- 
'Ax y^/wja). 
?itLy{ 
■Cticcfi^ 
Trema.doe 
Bav 
X{tl/<^VV/JJ 
P;<Waj4IB 
i/r/y»j^JM 
l/./tVl/^O/v 
LlunJant 
MfivhPtlA^ 
•^^^^iluT.iiil'h 
■S J itH''] 
PerJcHait S^ 
l£u-utJ'*f 
^raiciiv pyvll* 
Barda^ j 
Ynvs BnUi oi'®| 
Bdrdaev Js^W 
' flMo. 
LUoxibef^ 
Bnnaoutl] 
S,/.'«1.A^\^'^J 
' tr'i 
^laUiXK^'s 
nlittvii, 
■ Jlftilfrlil' 
Llui. 
ftnuidii 
>!liUiau}thti V 
j4iv, .,f 
blwyiu/wfili 
Lhinffehyniui 
'^rrt/naJ. 
'fmnrtu^'itli.‘ 
'^~-syi9^dy'Sti\aK 
iijrtowri 
•iUar‘n*i 
OM E ^ Y 
/ ] I'fuvnifn’^. 
U'' iA~ 
Pt'nnanlHS 
^^I'dLrnS 
fw></li/f»T \'> A<rt ■ 
Wthm ) 
Fiun\jT.%4i 
S. ZifV//«/t 7 /^ !! 
'// 7 ' ' > 
Alirrfio^ 
fi-Owi/g 
Viiys a, 
MAP OF THE 
SILURIAN VOLCANIC DISTRICTS 
J'ontdol^i 
f^nTfJSrsm 
- . 
jAlnnJ'iJuJnL 
/;hl.s!i4JbV’'^- 
-^^i^rnatohA 
7l 
Jitau/htdoiTiL 
Al«u‘ystwithfi 
l.liiniitv.'tlw /u 
■iik‘tty/y' 
Reduced from the Maps of the Geological Survey. 
ZllUtiL 
LianfH 
ErKtlishMilfi 
iimi 
EXPLANATION OF COLOURING 
Granite, &^c. 
I in Bosses and Sills 
Greenstones^' &‘c. 
in Bosses, Sills, and Dykes 
LOWER SILURIAN 
fov^ficlwu^^ 
Lamias and Tuffs 
interstratijied 
Jilnm 
Quartz-Felsite, Tuffs, and 
Conglomerates 
-»j^: c\;u 
;^ 0 Zrt.nvjm 3 
Schists, Quartzites, &^c. 
■with some Igneous Rocks 
(ngnm 
PRE-CAMBRIAN 
IjOnffitudt Weat 4 * oP itre&ovuJi. 
J. O..Bai?LfcLo3omew. 
Hie Edintrurgi. G-eo^aphical lastihate 
