CONTENTS. 



VOL. LXXIII. 



No. 488.— February 11, 1904. 



Page 



The Third Elliptic Integral and the Ellipsotomic Problem. By A. G. 

 Greenhill, F.E.S. (Abstract) 1 



On the Structure of the Palaeozoic Seed, Lagenostoma Lomaxi, with a 

 Statement of the Evidence upon which it is referred to Lygino- 

 dendron. By Professor F. W. Oliver and Dr. D. H. Scott, F.E.S. 

 (Abstract) 4 



Some Experiments in Magnetism. By T. C. Porter. Communicated by 

 Lord Eayleigh, O.M., F.E.S. (Plate 1) 5 



On the Distribution of Stress and Strain in the Cross-section of a 

 Beam. By John Morrow, M.Sc. (Vict.), Lecturer in Engineering, 

 University College, Bristol. Communicated by Professor Hele-Shaw, 

 F.E.S 13 



Observations on the Sex of Mice.— Preliminary Paper. By S. Monckton 

 Copeman, M.A., M.D., F.E.S., and F. G. Parsons, F.E.C.S. 32 



Observations upon the Acquirement of Secondary Sexual Characters, 

 indicating the Formation of an Internal Secretion by the Testicle. 

 By S. G. Shattock and C. G. Seligmann. Communicated by Pro- 

 fessor J. E. Bradford, F.E.S 49 



The Morphology of the Eetrocalcarine Eegion of the Cortex Cerebri. 

 By G. Elliot Smith, M.A., M.D., Fellow of St. John's College, Cam- 

 bridge, Professor of Anatomy, Egyptian Government School of 

 Medicine, Cairo. Communicated by Professor A. Macalister, F.E.S. 59 



On the Acoustic Shadow of a Sphere. By Lord Eayleigh, O.M., F.E.S. 

 With an Appendix, giving the Values of Legendre's Functions from 

 P ( , to P 20 at Intervals of Five Degrees. By Professor A. Lodge. 

 (Abstract) 65 



No. 489.— February 24, 1904. 



The Significance of the Zoological Distribution, the Natnre of the 

 Mitoses, and the Transmissibility of Cancer. By E. F. Bashford, 

 M.D., and J. A. Murray, M.B., B.Sc. Communicated by Professor 

 J. Eose Bradford, F.E.S. (Plate 2) 66 



Conjugation of Eesting Nuclei in an Epithelioma of the Mouse. By 

 E. F. Bashford, M.D.. and J. A. Murray, M.B., B.Sc. Communi- 

 cated by Professor J. Eose Bradford, F.E.S 77 



