CONTENTS 



SECTION A.-MATHEMATICAL, ASTRONOMICAL, AND PHYSICAL 



SCIENCE. 



PAGB 



Alexander (T.), M.A.I. , and J. T. Jackson, M.A.I. : — 



On Polygons to generate Diagrams of Maximum Stress on Girders 

 due to Locomotives and Dead Loads, together -with an Extension 

 of Eankine's Conjugate Load Areas to the Design of Masonry 

 Arches, ........... 1 



DowuNG (John J.), M.A., F.Inst. P., and C. J. Haughey, M.Sc. :— 



On tlie Electrification of Phosphorus Smoke Nuclei, ... 50 



Enbight (J.), B.A., M.Sc. :— 



See Nolan (J. J.), and J. Enright. 



Harris (J. T.), M.Sc. : — 



See Nolan (J. J.), and J. T. Harris. 



Haughey (C. J.), M.Sc. :- 



See DowLiNG (John J.) and C. J. Haughey. 



Jackson (J. T.), M.A.I. :— 



See Alexander (T.) and J. T. Jackson. 



Nolan (J. J.), M.A., D.Sc. :— 



Ionic Mobilities of Air and Hydrogen, ...... 74 



Nolan (J. J.), M.A., D.Sc, and J. Enright, B.A., M.So. : — 



Experiments on Large Ions in Air, . . . .... 93 



Nolan (J. J.), M.A., D.Sc, and J. T. Harris, M.Sc. :— 



lonisation of Moist and Dry Air, ....... 31 



Orr (W. M'F.), D.Sc, F.R.S. :— 



Solutions of Systems of Ordinary Linear Differential Equations by 



Contour Integrals, ......... 115 



0' Sullivan (A. C), M.D., S.F.T.C.D. :— 



Corresponding Points on the Curve of Intersection of two Quadries, . 131 



Rogers (Reginald A. P.), M.A. : — 



Oil the simplest mode of representing a real Continuous Linear 

 Orthogonal Transforination (with Constants added) by means of 

 Rotation and Translation of a Rigid Schema in a Euclidean 

 Manifold of n Dimensions, ....... 60 



