CONTENTS. 
_ NOTICES AND ABSTRACTS OF MISCELLANEOUS 
COMMUNICATIONS TO THE SECTIONS, 
Bt MATHEMATICS AND PHYSICS. 
Page 
Professor Sir W. R. Hamiton’s Exposition of the Argument of Abel, é 
: respecting Equations of the Fifth Degrec....ssesccecsscssssceveeereaterseees 1 
Professor Sir W. R. Hamiron on New Applications of the Calculus of 
Peerteipale belationsns sresa<-cecswasectsecnsohresvacssecscedeetenssseeoeectacr secs taal 
Professor Sit W. R. Hamrtton’s Exposition of Mr. Turner's Theorem 
respecting the Series of Odd Numbers and the Cubes and other Powers 
of the Natural Numbers. ........seeee0e saneesibacascessenpacsyraepeces soccveccoese 
_ Mr. Cuanzes Buacxsurn on some new Properties ‘of Geometric Series . 2 
_ The Rev. Dr. Rosson on the Parallax of « Lyre...... Wheaton eae seed danas 3 
© The Rev. W. WHEweEct on Tides. .......0. sccsccpeccsssccsenceses Seuss seagate 4 
Mr. Davipv Macxim on the Tides of Dundee and Glasgow. shee taunkss-aeereeatn 
_M. De La Rive on an Optical Phenomenon observed at Mont Blane.... 10 
Sir D. Brewsrer on the Cause of the Optical Phenomena which take 
place in the Crystalline Lens during the Absorption of Distilled Water. 11 
_ Sir D. Brrwsrer on a new Property of Light. .,.... daugesnts saseqesesexoeuial 2 
Sir D. Brewsren’s Notice of a new Structure in the Diamond. ........ eee ele 
4 Professor Cuntstin’s Account of a singular ee Phenomenon, some- 
times seen at Sunset. ..sseceeereee ceeseeece socsvere 15 
“Professor Powett on Von Wrede's “Explanation of the Absorption of 
Light, by the Undulatory Theory. ........sscseceereees teecteveccccceacscccecss 16 
Professor Powrxt on the Dispersion of Light. Neaeaduganasgzey stavdscudevacats cine’ & 
_ Professor Powntt on Experiments relative to the Influence of Surfaces 
MERLE EDT IAUTO Ft 'o7 00 cu da-sn 8s cnnevsdh acs catudconcs sedi eeasgancnessespashetsnssaeaiee 20 
_ The Rev. Professor Luoyp’s Account of the Magnetical Observatory now 
in the course of erection at Dublin. -...cccccscscecesescsccessreecceerseseses 20 
_ Professor Henrx’s Notice of Electrical Researches. Nssanvantay Ca gsonerescesegs 22 
_ The Rev. J. W. M‘Gautezy on a convenient and efficient form of Electro- 
magnetie Apparatus for the production of Electricity of high singel 24 
_ M. De La Rive on the Interference of Electro-magnetic Currents. ...... 27 
_ Mr. W. Errricx on the two Electricities, and on Professor Wheatstone’s s 
Determination of the Velocity of Electrie Light. ............ Rantgaeieuaaee 28 
_ Mr. 8. Hunrsr Cunisrie on the occurrence of Aurora Borealis in England 
during Summer; with a recommendation that the phenomenon should, 
at all seasons, be more carefully observed than hitherto. .......c...sere008 28 
METEOROLOGY, &e. 
q Mr. J. W. Lussocx on M, Poisson’s Theory of the Constitution of the 
BEML OSPHEE, J...+. .2s02..-ceressossneverssouseseogsgzate scyessansy inne sbaursesagaseoneee 
- On the Principle of Mr. hee: s TEEN ES as 32 
r. SourHwoop’s Account of his Observations with Mr. Whewell’ 3 "Anes 
_ mometer. eevenecceceoeearrerescepovee Reet sarees s eer ener reNOPePeee Prac onseoeeeraceges 30 
