CONTENTS. VU 



PAGE. 



On the Larva State of Plumatella, and on the Anatomy of Polycera 

 Quadrilineata. By Dr. Allman 218, 220 



On an Irish Manuscript preserved in the Royal Library, Paris. By 

 the Rev. J. H. Todd, D. D 223 



On a Rubbing from the Tombstone of William O' Byrne. By J. 

 Huband Srauh, Esq. . '. 229 



On a Provision in the Foetus of the Spined Dog Fish. By Robert 

 Ball, Esq 230 



On Passages in the Life of Shakspere. By the Rev. N. J. Hal- 



Din ,,•..••»••••••••••• ^oXf JiOo 



Some Remarks on Comets. By E. J. Cooper, Esq. . . 236, 258, 294 



On the Variations of the Magnetic Declination of Dublin. By the 

 Rev. H. Lloyd, D.D., President 236,237 



On the Apteryx Australis. By R. Ball, Esq 247 



On the Remains of a Cedar Ship found near Tyrella, County of 

 Down. By G. A. Hamilton, Esq., M= P 248 



On " A North House," in the Demesne of Hampton, and the Open- 

 ing of a Tumulus near Knockingen. By G. A. Hamilton, Esq., 

 MP 249 



On the Equilibrium and Motion of Elastic, Solid, and Fluid Bodies. 

 By the Rev. Samuel Haughton, F. T. C. D 252 



The Book of Armagh, deposited in the Library of the Academy. . 259 



Remarks on presenting a Collection of Celtic Antiquities. By W. R. 



Wilde, E.sq 260 



On Persepolitan Writing. By the Rev. Edward Hincks, D. D. 263, 265 

 The Objects, Construction, and Use of certain new Instruments for 



Self-Registration of Earthquake Shocks. By R. Mallet, Esq. . 266 



Some Observations on two Passages of Archimedes de Sphcera et 

 Cylindro. By C. T. Barnwell, Esq 268 



On the Anemometer of Osier. By Rev. H. Lloyd, D. D., Presi- 

 dent, 270 



Address to the Earl of Besborough, Lord Lieutenant, &c., with 

 his Answer 297 



On a new Instrument for observing the Magnetic Dip. By the 

 Rev. H. Lloyd, D. D., President 298 



On the Discovery of Iron Cores in certain Bronze Antiquities in the 

 Museum of the Academy. By Edward Clibborn, Esq., Curator 

 of the Museum 299 



Observations made at Markree Observatory on Le Verrier's Planet. 

 Communicated by E. J. Cooper, Esq 301, 363 



On a definite Integral. By Rev. William Roberts 305 



On Theorems of central Forces. By Sir W. R. Hamilton, LL. D. 308 

 Some Observations on Sir William Hamilton's Communication. By 



Rev. Charles Graves 309 



An Account of the Formation of the Museum at Copenhagen, and 



