CONTENTS. 



PAGE 



On Partial Fractions, By A. C. Dixon ' . 449 



Note on Plane Unicursal Curves. By A. C. Dixon . . . . . 454 



On the Order of Certain Systems of Conditions. By A. C. Dixox . . 458 



Electrical Oscillations in Wires. By H. C. Pocklington . . .461 



Metallic "Passivity" in Relation to Time and Temperature. By Dr 



W. A. Hollis . . . . . . ... . . 462' 



Note on Compounds containing an Asymmetric Nitrogen and an Asym- 

 metric Carbon Atom. By H. 0. Jones . . ... . 466 



Quasi- Radio- Activity 'produced by the Point Discharge. By S. A. Edmonds 469 



On the Early Development of the Unfertilized Egg in the Sawfly, Nematus 



ribesii. By L. Doncaster . . . . . . . . 474 



Effect of Screening on Ionisation in Closed Vessels. By A. Wood . . 477 



On the Proportion of the Sexes among the Todas. By R. C. Punnett. 



With a Note by W. H. R, Rivers . . . -. . . .481 



The Spatial Configuration of Trivalent Nitrogen Compounds. By H. 0. 



Jones and J. P. Millington . . 489 



On the Magnetic Deflexion of the Negative Current of Electricity from a 



hot Platinum Wire at lotv pressures. By Gwilym Owen . . . 493 



On the Absorption of Ultra-violet Light in different Gases. By W. 



Mansergh Varley . 510 



Proceedings at the Meetings held during the Session 1903: — 1904 . . 517 



Index . . . . 523 



