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 thesame. By James Apjohn, M.D. . . . . : Mees 37 | 
Letter from Mr. James S. Knowles, accompanying ey cast of an 
Inscribed Monumental Stone, found in St. sae aes 
London. ; 
On Rhyming Rats to Death, By the pa J. HL Todd, D. D. - 395 
On the Probable Errors of the Eye and Ear in Transit Olectration 
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 Ete 
mena of Fermentation. By Professor Allman. . . «ee 
Answer to the Address to the Lord Lieutenant. . . . ate.) 
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.. . . - Vel. eee 
On the shania ee of the Moon. by the Shade H. aes 
D. D. 383 
On ES cescatvicat lasipuetintich ot ein Results Ghtained by bey 
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 Ran Te Months, &c. mgd the Rev. Edward 
Hineks, D.D. . . 403 
On the Checiieal! Composition of the Antiquities in the hudba! 
By Mr. William Mallet. . . - 407 
On the Achievements of Magnus Barefoot, King of Nave}: By the 
Rey. W. H. Drummond, D. D. - « . 407, 421, 476 
On the Geometrical Demonstration Fe some T hpeihin by means of 
the Quaternion Analysis. By Sir William R. Hamilton, LL.D. 407 
On the Properties of the Functions of two Variables employed in the 
Interpretation of Triplets. By the Rev. Charles Graves, D.D. 423 
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 ak the Position of the freely sus- 
pended Horizontal Magnet. By the Rev. H. Lloyd, D.D.. . 434 
On the Webaedeeg of aie ay: 4 Surfaces, er the ae Professor 
Jellett. . se - 441 
On the Hbcuiinte of Hydri, By Picfomor. Adler: Taar - 444 
On the Primary Stages of ene and eee By Robert 
D. Lyons, M. B. - . 445, 480 
On ancient Irish Relatatien By the ee. J H. Todd, Dail 6} 
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 
ave Key. Samuel Haugttons A 
b 
