CONTENTS. vii 
On the best relative Position of Three Magnets, in a Magnetical 
Observatory. By the Rev. Humphrey Lloyd, A.M. . . page 264 
On the Direction and Mode of Propagation of the Electric Force 
traversing Media, which do not under Bical panes By 
George James Knox, Esq. . . - 270, 448 
Letter from M. D’Abbadie to the Rev. Bt Lloyd. acual wai ae 
On two Gold Torques found at Tara. By — Petrie, Esq. . 274 
Address of the President. . . . 276 
On the aan of = wo of the Dead Sea. ‘By Tn ames + Anjohn 
M.D. ais - 287 
On the Purple Dye of Tyre. By William R. Wylde, Esq. « « 293 
On a Sepulchral Urn and Stone Coffin found in the Parish ¥ nal 
bride. By the Rev. Robert Walsh,LL.D. . . . - 296 
On a Compound of Finarine and arho. By George J. ‘Knox, 
lll gre pa? 299 
On the Property of the Light emitted es  ioce Coke to 
blacken Photogenic Paper. By Robert Mallet, Esq. . 
Account for the Year ending the 31st of March, 1839. . . . . 302 
Description of a Peruvian Mummy. By William R. Wylde, Esq. 305, 312 
On a Manuscript Translation of Part of ree 8 aioe Er 
Joseph Lentaigne, Esq. . - " 309 
On Phosphorescence. By Sir Hout Marsh, Bart, Fie . 317 
On the original Language i ms Phepniciayey By Willian 
O’Brien, Esq. . > ‘ 322 
Account of the Cross of ad uted be Pectasine Mac Cullagh. 326 
On the Action of Air and Water onIron. By Robert Mallet, Esq. 329 
Account of the Magnetical Gagnon of Dighiine ay the Rev. 
Humphrey Lloyd, A.M. . . 330 
On the Insulation of Fluorine, and on a Compound ‘of Fluorine a 
Selenium. By George J. Knox, Esq. . - - . 335 
On the Employment of Rockets to determine the Difference of 
Longitudes of Armagh and Dubfi» By the Rev. Thomas R. 
Robinson, D.D. . . - 838 
‘Researches respecting Vibration, se ae the Theory id 
Light. By Sir William R. Hamilton, A.M. . 341 
Address of the President. S ee a - 350 
List of Subscribers for the Purchase of Gold foes biveli at Tara 354 
1839—1840. 
On the Bolina Hibernica. By Robert Patterson, Esq. . . + + 387 
Notice of a Waterspout qheeeredd at Rey By the Rey. 
Charles Dickinson, D.D. . . 358 
On 2 Loligo, (eh on an ne of Dublin Bay. By Robert * Bal 
Esq. . - 362 
On idaeiphallh Electricity. By E. s. Clarke, Esq. itt 364, 373 
