vi 



Page 



Solar Eclipse of 1900, May 28. — General Discussion of Spectroscopic 

 Results. By J. Evershed, F.R.A.S. Communicated by the Joint 

 Permanent Eclipse Committee 228 



( )n the Electrodynamic and Thermal Eelations of Energy of Magneti- 

 sation. By J. Larmor, M.A., D.Sc, Sec. R.S 229 



The Spectrum of y Cygni. By Sir Norman Lockyer, K.C.B., F.R.S., 

 and F. E. Baxandall, A.R.C.Sc , 240 



No. 472. 



Some Dielectric Properties of Solid Glycerine. By Ernest Wilson, 

 Professor of Electrical Engineering, King's College, London. Com- 

 municated by Sir William Preece, K.C.B., F.R.S 241 



The Relation between Solar Prominences and Terrestrial Magnetism. 

 By Sir Norman Lockyer, K.C.B., F.R.S., and William J. S. Lockyer, 

 M. A., Ph.D„ F.R.A.S. (Plates 4, 5) 244 



The Bending of Electric Waves round a Conducting Obstacle. By 

 H. M. Macdonald, F.R.S., Felloe of Clare College, Cambridge 251 



Studies in the Morphology of Spore-producing Members. — No. V. 

 General Comparisons, and Conclusion. By F. O. Bower, Sc.D., 

 F.R.S., Regius Professor of Botany in the University of Glasgow. 

 (Abstract)! 258 



On the Negative Variation in the Nerves of Warm-blooded Animals. 

 By N. H. Alcock, M.D. Communicated by A. D. Waller, M.D., 

 F.R.S 264 



On the Decline of the Injury Current in Mammalian Nerve, and its 

 Modification by Changes of Temperature. Preliminary Note. By 

 S. C. M. Sowton and J. S. Macdonald (from the Thompson-Yates 

 Laboratory of Physiology, University College, Liverpool). Com- 

 municated by Professor C. S. Sherrington, F.R.S 282 



On the Formation of Definite Figures by the Deposit ion of Dust. By 

 W. J. Russell, Ph.D., F.R.S. (Abstract) '.. 285 



Mathematical Contributions to the Theory of Evolution. On Honio- 

 typosis in Homologous but Differentiated Organs. By Karl Pearson, 



F. R.S., University College, London 288 



Primitive Knot and Early Gastrulation Cavity co-existing with Inde- 

 pendent Primitive Streak in Ornithorhynchus. By Professor J. T. 

 Wilson, M.D., and J. P. Hill, D.Sc, University of Sydney. Com- 

 municated by Professor G. B. Howes, LL.D., D.Sc, F.R.S 314 



The Brain of the Archseoceti. By G. Elliot Smith, M.A., M.D., Fellow 

 of St. John's College, Cambridge, Professor of Anatomy, Egyptian 

 Government School of Medicine, Cairo. Communicated bv Professor 



G. B. Howes, LL.D., D.Sc, F.R.S " 322 



