76 
Mr. E. W. Binney, F.R.S., F.G.S., said that in the Geologi- 
cal Magazine for August of last year Mr. D. Mackintosh, 
F.G.S., in a paper on Pholas Borings, Denudation, and 
Deposition in S.E. Devon, says, “ The structure and marine 
denudation of the district between Torbay and Babbicombe 
Bay has been so ably unravelled by Mr. Pengelly as to leave 
any other observer comparatively little to say. Among the 
most important discoveries must be ranked that of lithodo- 
mous perforations in limestone rocks at considerable alti- 
tudes above the sea.” In the September number of the 
same publication the Rev. William Gibbins describes some 
Pholas borings and says, “And here I ought to. mention 
that Mr. Pengelly was the first person from whom I learnt 
the supposed origin of these peculiar marks or holes in rocks 
near the sea coast.” At a meeting of this Society on the 
15th October last Mr. R. D. Darbishire, B.A., F.G.S., in a 
communication described similar holes and markings ob- 
served in the rocks near Buxton and on the Great Orme’s 
Head. 
No doubt it has been generally considered by geologists 
that Mr. Pengelly, F.R.S., a most acute and accurate ob- 
server, was the first person to notice the traces of litho- 
domous mollusks on rock surfaces. But it is now clear 
that such appearances had been observed and given to the 
public a quarter of a century ago. 
In a Sketch of Furness and Cartmel by Charles P. Jop- 
ling, published in 1813, in speaking of the geology of Stain- 
ton and Adgarley at page 10, the author says, “ The beds 
of the Carboniferous Limestone are well developed and are 
sometimes of great thickness On the green lie detached 
masses of rock as if formed 
Into rude shape by fire with roaring blast 
Impetuously let loose from central caves ; 
Or fashioned by the turbulence of waves, 
That when o’er highest hills the deluge pass’d. 
