168 
PROCEEDINGS OF SOCIETIES. 
been once buried in the drift, and then elevated, were afterwards unbu¬ 
ried by the wearing away of those beds in which they lay, and then 
reburied in the more modembeach. These shells were invariably rubbed, 
and also generally much corroded. General remarks on the various modes 
in which beaches were formed, and the evidences of the mode of their 
formation, concluded the paper. The shells had only occurred in two 
localities—one immediately above Bohemabreena. This was pointed 
out some years since by Professor Scouler. The second, about half a 
mile lower down the river, in the old Pox-earths, on the opposite side of 
the river. 
The President and Mr. Mallett made observations on the paper. Mr. 
Mallett pointed to the Escar of the Green Hills as an old tidal bar of the 
Dodder Valley, and alluded to the scratchings and the present position 
of the drift, as formed by subsequent slippages. 
Dr. Kinahan applied and accepted Mr. Mallett’s explanation of the 
bar origin of the Escars as explaining also the absence of shells in them. 
The Meeting then adjourned to the second Wednesday in June. 
GENERAL MEETING, WEDNESDAY EVENING, JUNE 9, 1858. 
The President in the Chair. 
Professor Kinahan read a paper on the Raised Sea Beaches of Port 
Philip, Victoria, observed by him in the year 1855. He stated that the 
great portion of coast consists of raised sand-hills, containing shells, and 
broken in two or three places by projecting rock; that these sand hills 
are frequently backed by a lagoon or arm of the sea, gradually separated 
from it, and in some instances communicating with it at high tide. In 
some places sections of these sand-hills are made by the sea; from which 
Professor Kinahan drew the conclusion that the whole beach had been 
subject to three periods of submergence and elevation. 
William H. Baily, E. G. S., read the following paper— 
ON A CRUSTACEAN FROM THE COAL-MEASURES, WITH SOME REMARKS ON THE 
GENUS LIMULUS. 
The fragment of shale on which these interesting remains of Crustacea 
are impressed was collected by George Henry Kinahan, Esq., of the 
Geological Survey, in the Bilboa Colliery, county of Carlow, from the 
three-foot bed of black shale immediately over the coal, associated with 
plants, and small fresh-water bivalves allied to TJnio. 
The specimen exhibits the upper surfaces of three detached cephalic 
shields, evidently belonging to one species, and presenting generic cha¬ 
racters similar to those peculiar forms of Crustacea found in ironstone 
nodules of the lower coal-measures at Coalbrookdale, Shropshire. Al¬ 
though the only parts of this species, yet discovered, are the separated 
heads or cephalic shields, their generic identity with those from Coal- 
