Contents. ix 



PAGE 



O71 double-sixes. By W. Burnside . . . . . . . . 428 



On the Procession and Pupation of the Larva of Cnethocampa pinivora. 



By T. G. Edwards. (Communicated by H. H. Brindley) . . 431 



Secondary Rontgen Rays from Metallic Salts. By J. L. Glasson. (Com- 

 municated by Professor Sir J. J. Thomson.) (Five figs, in Text) . 437 



On the Transmission of ^-rays. By J. A. Crowther. (Six figs, in Text) 442 



Some Experiments on lonisation in Dried Air. By S. G. Lusby. (Com- 

 municated by Professor Sir J. J. Thomson) 459 



On the Scattering of rapidly moving Electrified Particles. By Professor 



Sir J. J. Thomson 465 



Jacohi's double-residue theorem in relation to the theory of point-groups. 



By A. C. Dixon 472 



On the phosphorescence observed on the glass of vacuum tubes ivhen the 



pressure is not very low. By Professor Sir J. J. Thomson . . 482 



On the Mobilities of the Ions produced in Air by Ultra- Violet Light. By 

 A. Ll. Hughes. (Communicated by Professor Sir J. J. Thomson.) 

 (Four figs, in Text) 483 



On a Dissymmetry in the Emission of the Cathode Particles which are 

 produced by Homogeneous Rontgen Radiations. By R. T. Beatty. 

 (Communicated by Professor Sir J. J. Thomson.) (One fig. in Text) 492 



On Right- and Left- Handedness in Barley. By R. H. Compton. (One 



fig. in Text) 495 



On Accident in Heredity, tvith special reference to Right- and Left- 



Handedness. By F. J. M. Stratton and R. H. Compton . . 507 



Discontinuities in Light Emission. II. By Norman Campbell . . ,513 



The Absorption of Bromine by Lime. By W. A. R. Wilks. (Com- 

 municated by Dr Fenton) ........ 526 



Note on the Reduction of Nitrosyl GhloHde. By H. 0. Jones and 



J. K. Matthews . . 529 



The development of Trypanosoma levnsi in the Rat Flea (Ceratophyllus 

 fasciatus). By C. Strickland and Dr N. H. Swellengrebel. 

 (Communicated by Professor Nuttall) ...... 531 



The Development of Gnomonia erythrostoina., the Cause of Cherry Leaf 



Scorch Disease. By F. T. Brooks 534 



The Absence of Living Tubercle Bacilli from some Old Tuberculous 



Lesions in Man. By Dr Louis Cobbett ..... 536 



N^ote on the Radium-content of the Waters of the Cam, Cambridge Tap 

 Water and some Varieties of Charcoal. By John Satterly. (Com- 

 municated by Professor Sir J. J. Thomson) 540 



The Resolution of Externally Compensated Bases into their Optically 



active components. By Professor Pope and J. Read . . . 545 



