iv "CONTENTS. 
NUMBER XLV.—FEBRUARY. 
Page 
Rev. J. Challis on Capillary Attraction and the Molecular 
Forces of Fluids. 1)... 2200 oe sateen 0 t's ee tates te 89 
Letter from Peter Barlow, Esq. to the Rev. D, Lardner, on the 
Theory of Gradients in Railways...........-++++++-++- 97 
Mr. H. J. Brooke on Symbolic Notation, as applied to Minera- 
Bid py a kent io ie 0 on teen ee me omens 101 
Mr. J. MacCullagh on the Laws of Reflexion from crystallized 
Surfacestsy ee eae scone tation, © srettiew ig? occ ne 103 
Mr. R. W. Fox’s further Remarks on the Magnetic Forces.. 108 
Dr. H. Hudson’s Remarks on M. Melloni’s and Prof. Powell’s 
Papers on the Transmission of Calorific Rays inserted in 
Lond. and Edinb. Phil. Mag. for December 1835 and Ja- 
MBP YB SGS ooo 55 ni Scie eee ot se oe ah = Snel tee ye | ae 109 
Rey. Baden Powell on the Theory of Dispersion .......... 112 
Mr. Faraday’s Experimental Researches in Electricity. Tenth 
Sth Ce ys pee a bee eine ener eet cnr ic Radice 114 
Mr. T. T. Grant’s Experiments on the Protection of Iron from 
the Action of Salt Water ...... 2.2.2... eee e ee ee eee es 128 
Mr. E. Solly on the Conducting Power of Iodine, Bromine, 
BUNT CMOMING LOFPRICCETICIEY 0. wo. since els che ine seep 130 
Mr. W. Sturgeon’s Description of the Aurora Borealis of No- 
WERDER BG, PAGO. a cn te c'eysciee sory mat ce sm ce ee sin tel 134 
Mr. John Taylor on the History of Rotatory Single Steam 
Engines working expansively; in reply to Mr. Henwood.. 136 
Mr. S. Woodward on the Crag Formation; in answer to Mr. 
Chiarlesworth's Heply.. 22 eo citar Seavey eo 3m aye ep ected 138 
New Books :—Prof. Wheweli’s Remarks on an Article in the 
Quarterly Review on Newton and Flamsteed............ 139 
Proceedings of the Royal Society ( Anniversary, Nov.30, 1835) 147 
— Geological Society .............2+.... 156 
Ss Zoological Society. ..:.\ jy t.icade eae see 161 
An Cical x periment +. s/o a fees pain 2) che olay pote she, os ee 168 
MME ANG POEROONCe 5 Pickler Lye oe nice ohooh’ Lekota) afoteere fe 169 
On the Mirage, as seen in Cornwall.............5....0006 169 
Subsidiary Hypothesis to the Electro-chemical Theory of Sir 
RITE DUE VEIN. S verate Renee setae inte ceric pieehgnme ret 170 
Note on Mr. Challis’s Paper on Capillary Attraction ........ 172 
i. Dreithaubts Mineralogy. 2200. ccc cin cre ae cece od ome 173 
Pralleyis MEUMIEb ihn. act ce wile, Pepe nls kecfesit vite ster See 173 
Dr. Thomson on Sesquisulphate of Manganese ............ 173 
M. F. Wohler on Crystallized Oxide of Chromium ........ 175 
VOW SSCIENEINC TIQUMB eben. o's'aoivuselsin sc a! > snes atauateletatn 2 175 
