214 
PROCEEDINGS OF SOCIETIES. 
MONDAY, APRIL 26, 1858. 
James Henthorn Todd, D. D., President, in the Chair. 
J. Beete Jukes, Esq., read a paper “ On the Lower Palaeozoic Bocks of 
the South-East of Ireland and their associated Igneous Bocks.” 
Bey. Professor Haughton read a paper on the same subject, and de¬ 
scribed certain minerals as abounding in these rocks, which had been 
hitherto unnoticed in common granites of Ireland. 
The Secretary read a letter from the Chairman of the Local Com¬ 
mittee at Baltimore, inviting the Members of the Academy to attend a 
Meeting of the American Association for the Advancement of Science, 
to be held in that city. 
George Y. Du Noycr, Esq., presented a series of drawings of antiqui¬ 
ties, made by himself, from bronze and iron antiquities in the Museum 
at Bouen, in September last. 
Eleetwood Churchill, M. D., on the part of Dr. Lockhart, presented 
five porcelain seals, collected by that gentleman during his residence in 
China. Two of them have inscriptions exactly the same as the seals 
Nos. 2 and 51 engraved in the late Mr. Getty’s work on Chinese Seals 
found in Ireland. 
The Secretary announced the presentation of a medal by the Boyal 
Norwegian University of Christiania, struck in honour of Dr. Christopher 
Hausteen having completed a term of fifty years as Professor of Astro¬ 
nomy in that University. 
MONDAY, MAY 10, 1858. 
James Henthorn Todd, D. D., President, in the Chair. 
Bev. Charles Graves, D. D., read a paper “ On a System of Imagina- 
ries analogous to those employed by Sir William B. Hamilton in his 
Calculus of Quaternions.” 
The President read the following paper— 
ON THE CONTENTS OF CERTAIN ANCIENT TOMBS IN THE NEIGHBOURHOOD OF 
ANET, IN SWITZERLAND. 
I mentioned to the Academy on a former occasion that I had received 
a letter from M. le Baron de Bonstetten, of Berne, making some inquiries 
respecting the earthenware pipes, several specimens of which are pre¬ 
served in our Museum. My answer to him was, that I could not regard 
these pipes as more ancient than the sixteenth century, and, consequently, 
that the idea of supposing them in any way connected with the Celtic race 
was wholly untenable. 
The Baron has since been kind enough to send me an account of the 
opening of some ancient tombs at Anet, near Berne, in Switzerland, 
which is of considerable interest, as tending to establish some funda¬ 
mental principles of archaeological investigation. 
