PROCEEDINGS OE 



THE EOYAL SOCIETY. 



CONTENTS. 



/ a f June 6, 1872. 

 7 fit PAGE 

 / Election of Fellows 379 



June 13, 1872. 



I. On the Spectrum of the Great Nebula in Orion, and on the Motions of some 



.Stars towards or from the Earth. By William Huggins, LL.D., D.C.L., 

 F.R.S 379 



II. On Blood-relationship. By Fbancis Galton, F.E.S 394 



III. Further Experiments on the Effect of Alcohol and Exercise on the Elimina- 



tion of Nitrogen and on the Pulse and Temperature of the Body. By E. A. 

 Paekes, M.D., F.E.S 402 



IV. Report on Scientific Researches carried on during the Months of August, 



September, and October, 1871, in H.M. Surveying Ship ' Shearwater.' By 

 William B. Cabpenteb, LL.D., M.D., F.E.S 414 



June 20, 1872. 



I. Preliminary Note on the Reproduction of Diffraction-gratings by means of 



Photography. By the Hon. J. W. Steutt, M.A 414 



II. On the 26-day Period of the Earth's Magnetic Force. By J. A. Beoun, 



F.E.S 417 



III. Contributions towards the History of the Ethylene Bases. By A. W. 



Hopmann, Ph.D., F.R.S., Professor of Chemistry in the University of 

 Berlin . 425 



IV. Colouring-matters derived from Aromatic Azodiamines. By A. W. Hof- 



mann, Ph.D., F.E.S., and A. G-eygeb, Ph.D 431 



V. On the present amount of Westerly Magnetic Declination [Variation of 

 the Compass] on the Coasts of Great Britain, and its Annual Changes. 

 By Staff Captain Fbedeeick J. Evans, E.N., F.E.S., Hydrographic 

 Department of the Admiralty (in charge of Magnetic Department) . . 434 



VI. Notice of Further Eesearches among the Plants of the Coal-measures. By 



Prof. W. C. Williamson, F.E.S 435 



[For continuation of Contents see teh page of WrapperJ] 



