CONTENTS. IX 



PAGE. 



On the Analysis of the Waters of the Streams which descend from 

 the side of the Dublin Mountains. By Sir Robert Kane, M. D. 349 



On the same. By James Apjohn, M. D 351 



Letter from Mr. James S. Knowles, accompanying' the cast of an 

 Inscribed Monumental Stone, found in St. Paul's Churchyard, 

 London 351 



On Rhyming Rats to Death. By the Rev. J. H. Todd, D. D. . . 355 



On the Probable Errors of the Eye and Ear in Transit Observations. 

 By the Rev. T. R. Robinson, D. D., President 366 



Address to Earl St. Germans, Lord Lieutenant, &c 373 



On the Development of the Ferment Cells and other Vital Pheno- 

 mena of Fermentation. By Professor Allman 375 



Answer to the Address to the Lord Lieutenant 375 



On the Nature and Relative Proportion of the Alkalies occurring in 

 the Granite of the Vicinity of Dublin. By J. Apjohn, M. D. 379, 418 



On the same. By Sir Robert Kane, M. D 332 



On the Magnetic Influence of the Moon. By the Rev. H. Lloyd, 

 D.D 383 



On Geometrical Interpretation of some Results obtained by Calcu- 

 lation with Biquaternions. By Sir William R. Hamilton, LL. D. 388 



On Ogham Monuments. By the Rev. Charles Graves, D. D. . . 401 



On the Names of the Assyrian Months, &c. By the Rev. Edward 

 Hincks, D. D 403 



On the Chemical Composition of the Antiquities in the Museum. 

 By Mr. William Mallet 407 



On the Achievements of Magnus Barefoot, King of Norway. By the 

 Rev. W. H. Drummond, D. D 407, 421, 476 



On the Geometrical Demonstration of some Theorems by means of 

 the Quaternion Analysis. By Sir William R. Hamilton, LL. D. 40/ 



On the Properties of the Functions of two Variables employed in the 

 Interpretation of Triplets. By the Rev. Charles Graves, D. D. 42.3 



On the Codex Montfortianus. By the Rev. Orlando Dobbin, LL. D. 430 

 On the Cross of Kilnasagart. By J. Huband Smith, Esq. . . . 434 

 On the Influence of the Moon upon the Position of the freely sus- 

 pended Horizontal Magnet. By the Rev. H. Lloyd, D. D. . . 434 



On the Properties of Inextensible Surfaces. By the Rev. Professor 

 Jellett 441 



On the Structure of Hydra. By Professor Allman 444 



On the Primary Stages of Histogenesis and Histolysis. By Robert 



D. Lyons, M. B 445 > 430 



On ancient Irish Reliquaries. By the Rev. J. H. Todd, D. D. .461 



On the same. By George Petrie, LL. D 467 



An Account of the late Professor M'Cullagh's Lectures on Attrac- 

 tions, and Clairaut's Theorem, reported by G. J. Allman. By 

 the Rev. Samuel Haughton 468 



b 



