*. CONTKNIS. 



Page 



4. On Solvable IiTeduciblt^ Equations of Prime Degree. By Professor George 



Paxton Youno 64G 



5. The Tactinvariaiit of a Conical Section and a Cubic Curve. By Profes.'ior 



F. LiNDEMAN'N, PIl.D 647 



6. On the * Analysis Situs ' of Tlireedimensional Spaces. By Professor 



Waltiikk Dyck, Ph D G48 



7. On the Expression of the ("o-ordinate of a Point in terms of the Potential 



and Line of Force at the Point. By Professor W. M. Hicks, M.A 049 



8. On the Pressure at a Point inside a Vovtex-rinjif of Uniform Vorticity. By 



Professor W. M. IIicKs, ^[.A '. 049 



9. Transformation of tin- Stereo<rraph ic Equatorial Projection of a sphere by 



means of a certain form of the Peaucellier Cell. By Professor A. W. 

 PnrLurs 040 



10. A Geometrical Theorem in connection with tiie Three-cusped Ilypocycloid. 



By R. F. Davis ". '.... 649 



11. On the Discriminatinfr Condition of Maxima and ^linima in the ('alculus 



of Variations. By E. P. Oulveuwull, M.A 049 



12. On the Invariable Plane of the Sc^^r System. By Dayid P. Todd, M.A. 651 



Subsection of Physics. ' './ " 



1. Report of the Committee for facilitatinjj the adoption of the Metric • 



System of "\Vei»lits and Measures in Ch-ent Britain 051 



2. On the Colours of Thin Plates. Bv Professor Lord Rayleigh, LL.L., 

 F.R.S .'. 651 



3. On Olark'.-i Standard Cells. By Professor Lord Kayleioh. LL.D., F.R.S. 051 



4. On an Analo<rv between Heat and Electricity. Bv Professor G. F. Fitz- 



gerald, F.R.S '. 052 



5. The Telemeter System. By J. Urquhart Mackenzie 052 



6. The Influence of an Electric (hirrent on the Thinning of a Liquid Film. 



By Professors A. W. Reinold and A. W. Rucker 052 



7. On the Diffusion of Metals. By Professor W. Chandler Rouerts, F.R.S. 053 



8. On some Plienomena couTiected with Iron and other Metals in the solid 

 and molten states, with notes of experiments. By \V. J.Millar 053 



9. On the Velocitv of Light of Different Colours. By Professor George 



Forbes ". 053 



10. On the Velocity of Liirht in (Carbon Bisulphide and the Dilterence in 



Velocity of Red and Blue Light in tlu) same. By Albert A. Michelson 654 



11. On a Systematic Researcii for Stars with a Measurable Annual Parallax, 



and its Results. By Professor RoitERX S. Ball, LL.D., F.R.S 054 



12. On an Electrodynamonieter, with extremely light moving coil, for the 



measurenieii*: »f small alternating currents. By Dr. W. II. Stone 054 



13. On the Law regulating the Connection between Current and Intensity of 



Incandescence of Carbon Filaments in Glow Lamps. By W. H. Preece, 

 F.R.S 054 



14. On the Equations of Dynamo-Electric ^Machines. By Professor Silvanus 



P. Thompson 655 



15. On Earth Currents. By E. O. Walker 055 



16. Description of a (Hdindrical Slide Rule or Calculating Apparatus. By 

 Edwin Thacher 056 



