98 Remarks on the Transition Rocks of Werner. 
I might have cited, had my object been to prove the age’of 
granite with respect to all other rocks, were unnecessary, 
when my purpose was to point ont the relative ages of killas 
and granite. 
From what I have said, I consider myself warranted in 
finishing this paper with the following conclusions : 
The Killas of Cornwall belongs to the Transition: series 
of Werner. 
The Granite of Cernwall is possessed of every character 
by which the Oldest varieties are distinguished. 
That Granite, the nucleus round wibigh Werner conceives 
all other rocks were deposited, is in some cases actually of 
a later date than the Transition series, which comprehends 
strata containing shells ; and that its subsequent formation 
is clearly evinced by the appearances at St. Michael’s 
Mount. 
Hence, that the distinction of Transition rocks is 
grounded on false conclusions. 
And finally, Toat Werner must make very material al- 
terations on his present system, if he wishes to accommo- 
date it to the phenomena so commonly presented in nature. 
APPENDIX. 
On a former occasion, I stated as my opinion, that all 
geological papers ought to be accompanied with specimens 
of the rocks of which they treated. This is a condition 
not always to be complied with, unless the intention to 
write precedes the examination, when a collection may 
purposely be made; but when the idea suggests itself after 
one is far removed from the district, it amounts nearly to 
an impossibility. Inthe present instance, although I bz 
possessed of all the specimens necessary, they belong to a 
series which I formed for other purposes, Rather, how- 
ever, than mutilate this, [ have thought it better tu present 
the whole to the Society, in whose possession [ shall have 
an opportunity of referring to them at any time 3 and as they 
have siguified their acceptance, it is necessary to add to my 
paper the following brief list of the minerals I collected, 
which are marked and numbered, as picked up on my route, 
commencing in Somersetshire, where the Transition rocks 
first made their appearance, and ending at L]fracombe, after 
traversing Devon and Cornwall indifferent directions. 
After leaving Bristol, on the road to Exeter, we traverse 
the limestone ridge of Mendip; to the south of which 
there is an extensive plain, stretching to beyond Taunton, 
whose 
