vi CONTENTS. 
Professor W. THomson on the Mutual Attraction between two electrified 
Spherical Conductors scccs....cc..ccsscweccescscssnscesceevcascQ@ncecersceuesess seceyoees 
——__—_—_—__———— on certain Magnetic Curves; with applications to Pro- 
blems in the Theories of Heat, Electricity, and Fluid Motion ...............06+ 
—__—_—_———— on the Equilibrium of elongated Masses of Ferromag- 
netic Substance in uniform and varied Fields of Force ........cseesceeeeeseeeeees 
Mr. R. W. TownseEnp on an Instrument for exhibiting the Colours of Liquids 
De MANNOSE MIGDE | VI. Moench suecedecscdccuccscesteboctecscvses beudacceheeslehumeees 
De IGN) Le N DATE On MOleei ar ACEOM <c..0000c50000e0cevces ocevoeucessssvanegeoees 

——_—_—_———— on Poisson’s Theoretic Anticipation of Magnecrystallic 
ACHON «2. s.5+ca0e pe aneNgece trite peesrsesey si cirenascceenasecceceenssceeaeseesncne=<caveteeaect 
AsTRoNoMY, METEORS, WAVES. 
Mr. H. Hennessy on the Connexion between Geological Theories and the 
Theory of the Figure of the Earth ........-.....006- Seciee Waahiete a pe sige eee tetas 
Mr. James NasmMytu’s proposed Theory of the Origin of the Asteroids ...... 
The Ear or Rosse’s Drawings to illustrate Recent Observations on Nebulz. 
With Renigrks by Hever ROBINSON i..000.2 Mou clisccesccseaesceceatenssnadbenes 
METEOROLOGY, 
Sir Davip BREwsTER’s Account of a remarkable Case of Mirage ......+.-12+4+ 
on certain Phenomena of Diffraction ......,.ceseeee0+ 
Dr. G. Buist on four simultaneous Experiments in the Island of Bombay to 
determine the Fall of Rain at different Heights below 200 feet............. cg 
on Atmospheric Daily and Yearly Fluctuations ............se+e0e+ i 
Communication from the Smithsonian Institution ‘on the Plan adopted for in- 
vestigating the Meteorology of North America’ ............seseeceeseeseeseeeees eae 
Lieut. W. H. H. Hooper on the Aurora .........- ny aeabelis® esse saapikeuacteeiae eta 
Rev. H. Luoyn’s Notes on the Meteorology of Ireland, deduced from the Ob- 
servations made at the Coast-guard Stations under the direction of the Royal 
HSISHUACHGOMIV. Uenecsiunsensecsneseacsere:traecctesscs. scp eneipnessned canasssexehcn uate 
Mr. M‘Faruanp on the Fata Morgana of Ireland..............ceessseeeeeeeees négeete 
Mr. W. J. Macavorn Ranxrne on the Causes of the Excess of the Mean 
Temperature of Rivers above that of the Atmosphere, recently observed by 
M. Renou ........ sevapassusesecpecanvscchescrsesessccstescesssasaecas=secesesndcatacsiege 
Rey. T. Ranxrn’s Meteorological Summary for 1851, at Huggate, near Pock- 
REO avtsncteonensnscesuinbieosbuansnéwomsnTisiilichs tub sheashbabes dig 93-64). ced ies ae . 
on an Aurora observed at Huggate .......srssccseseeeeseceennes 
Rear-Admiral Sir Joun Ross on the Aurora Borealis ............ssssseeeveeesee ae 
Captain Srracuey on the Formula for the Wet-bulb Thermometer ............ 
Dr. J. Tayxor on Tropical Hurricanes .........00eeeeeeeeee doeseveccctectces CMaghamene 
Mr. J. K. Warrs on the Aurora Borealis observed at St. Ives, Hunts. ...... ei 



MISCELLANEOUS. 
Mr. Henry Twinine on an Instrument for Drawing ..........60cscceeeeeuees ives 
CHEMISTRY, 
Professor Tuomas ANDREws on the Discovery of Minute Quantities of Soda 
by the Action of Polarized Light .............scsesseccsssseceneenn peuaadbos seep eeneet 
—— on the Atomic Weights of Platinum and Barium 
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