fnsosrad 
XXIX. 
DEPOSITS OF UNBROKEN MARINE SHELLS AT HIGH 
LEVELS IN THE CARRAUN PENINSULA, COUNTY MAYO. 
By T. E. GORDON, M.B., ann A. F. DIXON, Sc.D. 
[Read, June 16; Received for Publication, Junr 19; Published, Juny 23, 1908. ] 
Durine the Easter holidays of 1907 we discovered a large deposit 
of shells a few miles west of Mulrany at about 100 feet above the 
present sea-level. The shells are all of modern littoral type, and 
of so fresh an appearance as to suggest that they were placed 
there very recently. Limpets form the large majority ; but we 
found many periwinkles (L. /ittorea and L. obtusata), and in less 
numbers Purpura, Trochus (two species), small mussels, cockles ; 
we also found a single Solen. These shells were for the most part 
unbroken, even in the case of the small fragile mussels, and one 
cockle had the ligament still intact. The number of shells was 
remarkable; we might easily have filled a wheelbarrow from 
any of the recesses of the rocks in which they lay. 
rm EK lp, ee ibs ny 
eo Se eae 
e AU aan RG. 
SN) 
SIN AM) i 
= Ny 
B a re fl a il 
7 
Efe ATA 
Fic.—Cliff of Old Red Sandstone. The dotted line A indicates the clefts, at the 
base of the cliff, in which the shell-deposits occur. (From a photograph.) 
The position of this deposit can be easily determined by 
anyone who walks along the road that leads from Mulrany to 
SCIENT. PROC. R.D.S., VOL. XI,, NO. XXIX. 2U 
