X CONTENTS. 



Page 



5. A simple hypothesis for Electro-magfnetic Iiiductiou of incomplete 



circuits, with consequent equations of Electric Motion in fixed homoge- 

 neous or heterogeneous solid matter. By Professor Sir William 

 Thomson, LL.D.,F.RS 567 



6. On the Transference of Electricity within a Homogeneous Solid Con- 



ductor. By Professor Su- William Thomson, LL.D., F.Pi.S 570 



7. Five Applications of Fourier's Law of Diffusion, illustrated by a Diagram 



of Curves with Absolute Numerical Values. Bv Professor Sir William 

 Thomson, LL.D., F.RS .' 571 



8. On Flux and Reflux of Water in Open Channels or in Pipes or other 



Ducte. By Professor James Thomson, LL.D., F.R.S 574 



SATURDAY, SEPTEMBER 8. 

 Depaetmbnt for Light and Electriciit. 



1. Siu: rapphcatiou de I'analyse spectrale a la m^canique mol^culaire et sur 



les spectres de I'oxjgene. By Dr. J. Janssen 576 



2. On the Absorption Spectrum of Oxygen. By Professors Liveing, F.R.S., 



and Desvar, F.R.S 576 



3. The Spectra of Meteorites compared with the Solar Spectrum. By J. 

 Norman Lockter, F.R.S ". 576 



4. On the Harmonic Series of Lines in the Spectra of the Elements. By 

 Professor Carl Runge 576 



5. A Vortex Analogue of Static Electricity. By Professor W. M. HiCKS, 



M.A., F.RS 577 



6. On a DiflFusion Photometer. By J, Jolt, M.A., B.E 578 



7. Third Report of the Committee on Electrolysis 578 



Department for Mathematics and General Physics. 



1. On Centres of Finite Twist and Stretch. By Professor R. W. Genese, 

 M.A 579 



2. On Recurring Decimals and Fermat's Theorem. By Professor R. W. 

 Genese, M.A 580 



3. On the Relations between Orbits, Catenaries, and Curved Rays. By 

 Professor J. D. Everett, F.R.S 581 



4. On the Stretching of Liquids. By Professor A. M. Worthington, 

 M.A., F.R.A.S 583 



5. A new Sphere Planimeter. By Professor Hele Shaw, M.Inst.C.E 584 



6. On Composition of Sensation and Notion of Space. By L. de la Rive... 585 



MONDAY, SEPTEMBER 10. 



1. Third Report of the Committee for inviting Designs for a good Differential 

 Gravity Meter 586 



2. Fourth Report of the Committee for considering the best means of Com- 



paring and Reducing Magnetic Observations 586 



3. Third Report of the Committee appointed to co-operate with the Scottish 



Meteorological Society in making Meteorological Observations on Ben 

 Nevis 586 



