PROCEEDINGS OF 



THE EOYAL SOCIETY. 



vol. xxi. No. 147. 



CONTENTS. 



PAGE 



November 20, 1873. 



4 



I. Note on the Electrical Phenomena which accompany irritation of the leaf of 

 Dionaa muscipula. By J. Burdon Sanderson, M.D., F.R.S., Professor 

 of Practical Physiology in University College 495 



II. On the Algebraical Analogues of Logical Relations. By Alexander J. 



Ellis, B.A., F.R.S., F.S.A., F.C.P.S., F.C.P. 497 



November 27, 1873. 



I. On the Optical Properties of a new Chromic Oxalate. By Walter Noel 



Hartley, F.C.S., Demonstrator of Chemistry, King's College, London . 499 



II. On the Quantitative Analysis of certain Alloys by means of the Spectroscope. 

 By J. Norman Lockyer, F.R.S., and William Chandler Roberts, 

 Chemist of the Mint 507 



III. Researches in Spectrum- Analysis in connexion with the Spectrum of the Sun. 



— Part III, By J. Norman Lockyer 508 



List of Presents 514 



Index 519 



Obituary Notices : — 



John Bishop v 



Baldwin Francis Duppa vi 



CATALOGUE OF SCIENTIFIC PAPERS. 

 Six vols., 4to, always on Sale, and may be obtained through any bookseller. 



NOTICE. 



A Meeting of the Government- Grant Committee will be held in February. It is 

 requested that applications to be considered at that Meeting be forwarded to the 

 Secretary of the Royal Society before the 31st of January, 1874. 



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