72 fteports and Proceedings. 
the blown sand and beds of peat, namely, to the most recent period, 
during which the land was raised to its present level. 
Mr. Jamieson described: in great detail the deposits representing 
each of these periods, and concluded his paper with lists of shells 
from the different beds, showing the percentage of the species that 
are now found in the British, Southern, Arctic, North-east American, 
and North Pacific regions. 
Groxoeists’ Association, Tuesday evening, Dec. 6, 1864 ; E. Cresy, 
Esq., President, in the chair.—Mr. Tomuinson, of King’s College, read 
a paper entitled ‘Two Days on the Chesil Bank,’ in which he de- 
scribed a visit to that remarkable bank of shingle, the most extensive 
in Europe, extending, as it does, from Burton Cliff, near Bridport, 
to the Isle of Portland, a distance of nearly nineteen miles. Mr. 
Tomlinson did what few visitors to this part of our coast care to do: 
he walked the whole length of the Bank, which in the last ten miles 
has no other path than the loose shingle. He also collected (and ex- 
hibited) pebbles from different parts of the Bank, not only to illus- 
trate their species, but also the remarkable and gradual increase in 
size, from blown sand at Burton Cliff, to pebbles of the size of 
turnips at the village of Chesil. Among the pebbles, those of 
rolled flint or of translucent quartz are most abundant: there 
were also pebbles cf black Fuller’s earth, black Devonian Lime- 
stone, Old Red Sandstone, porphyry with green and red spots, 
Lias with lines of carbonate of lime, Forest-marble, and jasper. 
Parts of the Bank are broken into gulleys by the infiltration of 
water, and the subsequent hydrostatic pressure during heavy seas. 
A large map of the locality, and diagrams showing the dimensions 
of the Bank, as determined by Mr. Coode, the Engineer of the Port- 
land Breakwater, were exhibited. The questions then discussed by 
Mr. Tomlinson were—1. Where do the pebbles come from? 2. What 
force transferred the pebbles from a distance? 8. What force re- 
tains them in their present position? 4. Why do the largest pebbles 
travel to the greatest distance? Mr. Coode’s investigations were 
several times referred to, as well as those of Mr. Palmer and others, 
on moving shingle, and the importance to the engineer of ascertaining 
the laws which govern it. 
After the reading of the paper, a lively discussion followed, in 
which a large number of the Associates took part. The President 
summed up, and Mr. Tomlinson replied at some length. He recom- 
mended that one of the next Summer-trips of the Association should 
be to the Chesil Bank, and that in the mean time a Committee 
should be appointed to draw up instructions for. the visitors as to 
what points require to be carefully examined before all the ques- 
tions raised on the subject could be considered as settled.— J. C. 
RoyaL GEorocicaL Society or IreLAnD.—There was a general 
meeting of the Society on the 14th December, in the Museum 
Building, Trinity College. The chair was taken by the Rev. Dr. 
Luoyp, the President. The Rev. Dr. S$. Haueuron read his paper 
