JOURNAL 
OF THE 
ROYAL INSTITUTION OF CORNWALL. 
No. XIII. APRIL. 1872. 
I—The Insulation of St. Michaels Mount, Cornwall. 
By W. PENGELLY, F.R.S., F.G.S. 
Read at the Spring Meeting, May 23, 1871. 
HOUGH the “Mount” can never fail to be an object of great 
interest and of pride to Cornishmen, I might, in ordinary 
circumstances, have hesitated before venturing to make it the 
topic of a communication even to this Institution, seeing that I 
have already read three distinct papers on it to as many scientific 
societies—the British Association, at its meeting at Birmingham, 
in September, 1865; the Royal Institution of Great Britain, on 
April 5th, 1867; and the Devonshire Association, during its 
meeting at Barnstaple, in the following July. 
The first was never printed by me or with my knowledge ; 
but, as will presently be seen, a notice of it, and by no means a 
correct one, appeared in some newspaper. A full abstract of the 
second, prepared by myself, was printed in the Proceedings of the 
Royal Institution ;* and the third was printed in eatenso, in 
October, in the Transactions of the Devonshire Association. 
On November 25, 1867, Mr. Max Miller, the eminent Pro- 
fessor of Comparative Philology at Oxford, read to the Ashmolean 
Society a paper on “The Insulation of St. Michael’s Mount,” 
* Procecdings Roy. Inst. Great Britain, Vol. v, p. 128. 
{ Vol. iii, pp. 129-161, 1867. 
