212 
POPULAR SCIENCE REVIEW. 
The fragment is seven inches long, and measures nearly four inches from 
the alveolar border to the inferior margin. There is just two inches of this 
margin perfect ; and this is at the point where undoubtedly the ramus is 
deepest. The inner surface is exposed to view, and is concave longitudinally, 
the outer surface being a little convex, as is evident in the transverse sec- 
tion of the specimen in front. The bone, which is in a very perfect state of 
preservation, is composed of two parallel layers — an inner, the splenial 
plate, and an outer, the dentary piece, and is stout, particularly at the 
alveolar border, where it is an inch thick ; thence it becomes gradually 
thinner to the longitudinal middle line : here it is scarcely more than one- 
fourth of an inch thick, and so continues to the inferior margin. After 
these general remarks the authors deal at length with the whole subject. 
Death of Professor Sedgwick . — It is with profound regret that we have 
to a^cknowledge the death of this veteran geologist, who was born as early 
as 1786. He died at Trinity College, Cambridge, of which he was a Fellow, 
on the 27th of January, in his 88th year. He had held the chair of Wood- 
wardian Professor of Geology in the University since 1818, and his works 
are thoroughly familiar to everyone who has studied geology. 
Professor Sedgzvick’s Successor. — The “ Geological Magazine ” (March) 
informs us that the election of a successor to the late Professor Sedgwick 
was held on the 20th February, when Mr. Thomas M^Kenny Hughes, M.A., 
of Trinity College, was chosen by a majority of seven. By a statute of the 
University, the election must take place within one month from the vacancy 
being declared. No fewer than nine candidates had issued applications to 
the electors who were the members of the Electoral Roll, consisting of the 
Heads of Houses, Professors, University Examiners, and resident members 
of the Senate. The candidates were as follows ; Rev. 0. Fisher, F.G.S., 
Rev. T. G. Bonney, F.G.S., and Messrs. T. M‘K. Hughes, F.G.S., and A.H. 
Green, F.G.S. (Cambridge), Rev. P. B. Brodie, F.G.S., Mr. W. Boyd 
Dawkins, F.R.S., and Mr. T. H. G. Wyndham, F.G.S. (Oxford), Professor 
Morris, F.G.S., and Professor Martin Duncan, F.R.S. (London). 
The Medals given hy the Geological Society j and the Anniversary Address . — 
The medals were given away at the Anniversary Meeting that was held on 
Friday the 21st February. His Grace the Duke of Argyll, K.T., Presi- 
dent, in the Chair. The Wollaston Gold Medal was awarded to Sir Philip 
de Malpas Grey Egerton, Bart., M.P., for his eminent services to Palaeonto- 
logical Science, and particularly in recognition of his researches in fossil 
fishes. The balance of the Wollaston Fund was awarded to J. W. Judd, 
Esq., F.G.S., in aid of his investigation into the Geology of Sutherlandshire, 
&c. The First Murchison Bronze Medal (together with a part of the 
Fund) was awarded to Mr. William Davies, of the British Museum, in 
recognition of his long and valuable services, rendered during a period of 
thirty years, to the cause of Palaeontological Science. The balance of the 
Murchison Fund was awarded to Professor Oswald Heer, of Zurich, in aid 
of his researches into the Miocene Flora of Arctic Europe, Greenland, and 
America. The Anniversary Address was then delivered by His Grace the 
Duke of Argyll, as President, in which he ably controverted the theory of 
a Polar Ice-cap extending to the South of Europe, and contended that even 
the powers of glaciers to cut out valleys and excavate lake-basins had been 
