VIU CONTENTS. 



Pag& 

 9. On the Electric Conductivity and Dichroic Absorption of Tourmaline. 

 By Professor SJivANUs P. Thojipson, B.A., D.Sc 531 



10. On the arrangement of Cometic Perihelia with reference to the Sun's 



march in space. By Henkt'Mtjirhead, M.D 532 



Mathematical Depaetment. 



1. Second Report of the Committee appointed for the calculation of Tables 



of the Fundamental Invariants of Algebraic Forms 532 



2. Report of the Committee on Mathematical Tables 532: 



3. Report on Recent Progress in Hydrodynamics. — Part I. By W. M. Hicks, 



M.A ; 532 



4. Sur un criterium de Steiner relatif a la theorie des sections coniques. Par 



M. Halphen 532 



5. Some new Theorems on Curves of double Cur^'ature. By Professor 



SlTTEM 534 



6. On Oongruencies of the Second Order and Second Class. By Dr. T. 

 Akchee Hiesx, F.R.S 5.J4 



7. Sur les faisceaux de forme biquadratique binaire ayant une meme 

 Jacobienne. Par Cyparissos Stephanos 534 



8. On a Diagi-am connected with the Transformation of Elliptic Functions. 



By Professor Catlet, F.R.S 534 



9. A partial Differential Equation connected with the simplest case of Abel's 



Theorem. By Professor Catlet, F.R.S 534 



10. On the Differential Equations satisfied by the Modular Equations. By 



Professor H. J. S. Smith, M.A,, F.R.S 5-35 



11. On the q-Series in Elliptic Functions. By J. W. L. Glaisher, M.A., 

 F.R.S 535 



12. On the Elucidation of a Question in Kinematics by the aid of Non- 

 Euclidian Space. By Robert S. Ball, LL.D., F.R.S 535' 



13. On a Theorem relating to the Description of Areas. By William 

 WooLSET Johnson, Professor of Mathematics ui the Naval Academy, 

 Annapolis, U.S 536 



14. On the Equation of the Multiplier in the Theory of Elliptic Transforma- 

 tion. By Professor H. J. S. Smith, M.A., F.R.S 538 



15. On a Linear relation between two Quadratic Surds. By Professor 



H. J. S. Smith, M.A., F.R.S 538 



16. On a Class of Binodal Quartics. By Professor R. W. Genese, M.A 538 



SATURDAY, SEPTEMBER 3. 



1. On a Class of Differential Equations. By Professor Halphen 538 



2. On the Aspects of Points in a Plane. By Professor Halphen 538 



3. On a Connection between Homographies in a Straight Line and Points in a 

 Space. By Ctpaeissos Stephanos 5.38 



4. On Involutional (1 1) Correspondence. By Professor Genese, M.A 539 



5. On the Velocity Function of a Liquid due to the Motion of Cylinders and 



Surfaces of Revolution. By A. G. Greenhill 540 



