PROCEEDINGS OF 

 THE ROYAL SOCIETY. 



vol. xxxiv. No. 223. 



|o I CO^TENTS^ '8gj 



December 21, 1882. 



PAG-B 



I. On the Normal Paraffins. Part IY. By C. Schoelehmee, F.R.S., and 



T. E. ThobPe, F.R.S. 405 



II. On the Connexion between the State of the Sun's Surface and the 

 Horizontal Intensity of the Earth's Magnetism. By Baleoeb. 

 Stewaet, F.R.S .406 



HI. On a Method of Photographing the Solar Corona without an Eclipse. 



By William Huggins, D.C.L., LL.D., F.R.S. . . . .409 



IY. On the Dark Plane which is formed over a Heated Wire in Dusty Air. 

 By Loed Rayleigh, F.R.S., Professor of Experimental Physics in the 

 University of Cambridge . . 414 



Y. On the Origin of the Hydrocarbon Elame Spectrum. By Gr. D. Leveeng, 

 M.A., F.R.S., Professor of Chemistry, and J. Dewae, M.A., F.R.S., 

 Jacksonian Professor, University of Cambridge .... 418 



VI. On the Inversion of the Blastodermic Layers in the Bat and Mouse. By 



Alexander Eeasee, M.B., &c, Owens College, Manchester . . 430 



VII. On the Electric Discharge with the Chloride of Silver Battery. By 

 Waeben De La Ree, M.A., D.C.L., F.R.S., and Hego Mellee, 

 Ph.D., F.R.S. . 437 



January 11, 1883. 



I. Experiments, by the Method of Lorentz, for the further Determination 

 of the Absolute Value of the British Association Unit of Eesistance, 

 with an Appendix on the Determination of the Pitch of a Standard 

 Timing-Fork. By Loed Rayleigh, F.R.S., Professor of Experimental 

 Physics in the University of Cambridge, and Mes. H. Siegwick . 438 



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