An Autograph Letter of the late Dr. sii vib Lira by Edward 
Bewley, M.D. . . =... ashe, outa ates 
On some Experiments on the Poisonous Properties of  Stryhnin and Nicotine. 
By the Rev. Samuel Haughton. . . SU GOR hecgce At a tbaee 
On an Ogham Inscription. By Richard Hitchcock, ‘ihe Sia aalo gee bs 
On some Roman Coins found near Rathfarnham. By George Petrie, LL. D. 
A Biographical Notice of Colonel Jules Terence O’Reilly. By A. O’Reilly, Esq. 
On the early System of Abbatial Succession in the Irish Monasteries. a the 
Rev. W. Reeves, D.D. . . . . Mw OLSh oad 
On the Irish Abbey of Honau, on the Rhine. By dl the Rev. W. ands D. D. 
On the Icosian Calculus. By Sir William R. Hamilton, LL.D. . . . . 
Address on the Utility of Antiquarian Collections in relation to the Pre- 
Historic Annals of Europe. By the late J. M. Kemble, Esq. . . . . 
On Professor Mac Cullagh’s Theorem of the Polar Plane. By A. Cayley, Esq. 
On a movable Horizontal Sun-dial. By M. Donovan, Esq. . . . .. . 
On a new and singular Acoustic Phenomenon. By M. Donovan, Esq. . . 
On a new Arrangement of Grove’s Galvanic Battery. By G. J. Stoney, Esq. 
On the Expedition to the Neighbourhoot of the Magnetic Pole about to leave 
England. By the Rev. Samuel Haughton. . . . . oGthe Abas 
On the Distribution of Heat over the Island of Great Britain, By iy 
Hennessy, Esq. . . . «= aOR al tivetitisw: ftallnt biapcetai tics Verda 
On the General Expression by Quaternions oi Cones of the Third Order. By 
Sir W. R. Hamilton, LL. D. Re! Ws Fe tr mh CORA 
Memorial to the Rt. Hon. Lord ‘eaeccetian, Praying the ‘‘ Resolute” to be 
fitted for another Arctic Exploration. . . . Aes my ton Meta 
On the Foundation of Archbishop Marsh’s Library. By J. Huband Smith, Esq. 
On the General Equation in Quaternions for Cones of the Third Order. By 
Sir W. R. Hamilton, LL.D. . . . . . . Je saute mies harika eens 
Letter from the Rey. J. H. Todd, D. D., to the Ci ibeieate proposing to have 
the Materials collected for the Ordnance Survey deposited i in the Academy. 
Answer from Lieut.-Col. Larcom. . . . . . 2 © © « 
meercttertromG@aptain meses 6s bevy se. 8 ee be te ats 
On the Personal Pronouns in their most ancient form. By the Rev. Edward 
Pian. DSP RR z 
On a certain Harmonic Property of the Envelope of the Chord connecting two 
corresponding points of the Hessian of a Cubic Cone. By Sir Wm. R. 
Hamilton, BID Sele as) he he 
. On a Fundamental Theorem respecting Congruences, affecting a class of Com- 
plex Integers, which involve the Imaginary Cube Roots of Unity. By J. 
FES iGIAyCs, Bist. awe: sae Bi <a ie rachis ej hers Zils Wietd sul 
ANTIQUITIES BOUGHT,—pp. 203, 315. 
99 EXCHANGED,—p. 155. 
By-Laws,—pp. 17, 31, 38, 71, 319, 499. 
Derosir or ANTIQUITIES,—p. 526. 
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