CONTENTS. 



SCIENCE. 



ART. P.tGE. 



I. On the Relation between the Temperature of Metallic Comlw-tors, and 

 their Resistance to Electric Currents. By the Rev. Thojias Romney 

 Robinson, D.Z),il/.i2./.^.,4-c. Read November 30, 1848. . . 1 

 II. On the Theory of Planetary Disturbance. Br/ the Rev. Brice Bronwin. 



Read November 30, 1848 25 



III. On the Mean Results of Observations. By the Rev. Humphrey Lloyd, 



A Z)., President, /"./?. S.,(^-c. Read June 12, 1848 61 



IV. Results of Observations made at the Magnetical Observatory of Dublin, 



during the Years 1840—43. [First Series — Maynetic Declination.^ 

 By theRev. Humphrey Lloyd, Z).Z)., President, F.R.S., <^-c. Read 



May 11 and 25, 1846 74 



V. On a Classification of Elastic Media, and the Laws ofPhine Waves pro- 

 pagated through them. By the Rev. Samuel Haughton, Fellow and 

 Tutor of Trinity College, Dublin. Read January 8, 1849. ... 97 

 VI. On the Rotatio?i of a Solid Body round a fixed Point ; being an Account 

 of the late Professor Mac Cullagh's Lectures on that Subject. Com- 

 piled by the Rev. Samuel Haughton, Fellow and Tutor of Trinity 

 College, Dublin. Read April 23, 1849 139 



