Cassie (Prof. AY.) on.-the measure- 

 ment of Young's modulus, -±02. 



Cathode, on the current-den/iJtgr^t^ 

 the, in the electric discharge m air, 

 608. 



Chabot (J. J. T.) on a rotating earth- 

 inductor without slidiug-contacts, 

 506. 



Chloroform and acetone, on the 

 vanour-pressures of mixtures of, 

 121. 



Clay den effect, on the, 606. 



Cloudy condensation, ou the sizes of 

 water-particles producing coronal 

 and axial colours in, 24. 



Coal-calorimeter, on an improved 

 form of, 451. 



Cobalt, on the magnetostriction of, 

 45 ; on the change of rigidity of, 

 by magnetization, 544. 



Conduction of heat, on a problem in 

 conduction of, 162. 



Conductivity, on the electrical, pro- 

 duced in gases when they pass 

 through water, 352 ; on the electri- 

 cal, of metals and their vapours, 

 596. 



Convection, on the influence of, 

 on optical rotatory polarization, 

 367. 



Coomaraswaniy (A. K.) on the 

 crvstalline limestones of Ceylon, 

 421. 



Corona, on the phenomena of the. 

 256.' 



Corpuscles, on the emission of nega- 

 tively charged, by hot bodies, 253. 



Crystals, on the behaviour of a 

 pleochroitic, along directions in the 

 neighbourhood of an optic axis, 

 90 ; on the molecular dvnamics of 

 a, 139. 



Cunningham ( J. A.) on the discharge 

 of electricity through gases and 

 the temperature of the electrodes, 

 (584. 



Current-density at the cathode in the 

 electric discharge in air, on the, 

 608. 



Davison (Dr. C.) on the Carlisle 

 earthquakes of 1901, 516 : on the 

 Inverness earthquake of 1901, 516. 



Determinant, on the Jacobian of the 

 primarv minors of an axisvmmetric, 

 507. 



Diffraction of light, on the, 346. 



727 



Ditfi?a^o«^ratii]g spectrum, on a 

 case of uiieyeu distribution of licrht 



narv mixtures, on 



m a, 



Distillation of 

 the, 521. 



Double refraction, on motion throu^ 

 the aether ancf, 678. 



Durack (J. J. E.) on Lenard rays, 

 29. 



Dwerry house (A. R.) on the glacia- 

 tion of Teesdale and the Tyne 

 valley, 176. 



Earth-inductor, on a rotating, 506. 



Earth's motion, on rotatory polariza- 

 tion and the, 215 : on double 

 refraction and the, 678. 



Ebullition of rotating water, on the, 

 330. 



Edser (E.) on the diffraction of 

 light from a dense to a rarer 

 medium, 346. 



Elasticity, on the change of the 

 modulus of, of ferromagnetic sub- 

 stances by magnetization, 459. 



Electric current, on the electrostatic 

 field round an, 136. 



discharge in air, on the current- 

 density at the cathode in the, 608. 



force, on the forms of the lines 



of in the neighbourhood of wires 

 leading electric waves, 302. 



■ origin of molecular attraction, 



on the, 625. 



Electrical conductivity produced in 

 gases when they pass through 

 water, on the, oo2 ; of metals and 

 their vapours, on the, 596. 



properties of thin metal films, 



on the, 652. 



resistance, on the change of, 



in nickel by magnetization, 430 ; 

 of bismuth to alternating currents, 

 on the, 554. 



resonance of metal particles for 



light-waves, on the, 425. 



Electricity, on the discharge of, 

 through gases, 684. 



Electrification, on the discharge of 

 positive, by hot metals, 98. 



Electrodes, on the drop of potential 

 at the, in vacuum-tube discharge, 

 490 ; on the discharge of electrieitv 

 through cases and the temperature 

 of the; 684. 



Electrolysis of alkali salt- vapours, on 

 the laws of, 207. 



