1X 
An Autograph Letter of the late Dr. Charles na ce by Edward 
Bewley, M. D. : aio 
On some Experiments on the Poisonous Properties of  Styehnin and Nicotine. 
By the Rev. Samuel Haughton. . . SEC MM ARI RCM Nee 5 
’ . . 
On an Ogham Inscription. By Richard Hitchcock, hn LEAR neti bce 
On some Roman Coins found near Rathfarnmham. 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. ai the 
Rev. W. Reeves, D.D. . . . naka 
On the Irish Abbey of Honau, on the Rhine. “By tl the ase W. vee 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. 
On the Distribution of Heat over the Island of Great Britain, By Henry 
Hennessy, Esq. . . - - Bey fe eure eee 
On the General Expression by Quatetnions vit Ane of the Third Order. By 
Sir W. R. Hamilton, LL. D. Si eeee ee WR a 
Memorial to the Rt. Hon. Lord eta praying the ‘‘ Resolute” to fi 
fitted for another Arctic Exploration. . . . . «© 2» «© «© « « 
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. . . . . FM ES MG CaCO Ouse 
Letter from the Rev. J. H. Todd, D. D., to the a ae proposing to have 
the Materials collected for the Ordnance Survey deposited in the Academy. 
Answer from Lieut.-Col. Larcom. . . . - «© © «© «© «© © «© «@ 
_ Letter from Captain Leach. . . . - » © «© «© © « © @ © 
On the Personal Pronouns in their most ancient form. By the Rev. Edward 
Bancks DED yi Src io ies st 
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. 
LEK WD S Dis Gs Oia Ge He hr be Oe Be ON so 
On a Fundamental Theorem respecting Congruences, affecting a class of Com- 
plex Integers, which involve the Imaginary Cube Roots of Unity. By J. 
PES Gra ves Vhs: tims cs “erica! faire cietal. i Rkel cals toate, \'s 
. . . . . . 
. . 8 
ANTIQUITIES BOUGHT,—pp. 203, 313. 
9 EXCHANGED,—p. 155. 
By-Laws,—pp. 17, 31, 38, 71, 319, 499. 
Deposrr or ANTIQUITIES,—p. 526. 
Pace, 
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