o6- 



PROCEEDINGS OF 



THE ROYAL SOCIETY. 



YOL. XXXI. 



No. 206. 



CONTENTS. 



Researches on the Action of Organic Substances on the Ultra- Violet Ears of 

 the Spectrum. Part III. An Examination of Essential Oils. By W. IS T . 

 Hartley, E.R.S.E., &c, Professor of Chemistry in the Royal College of 

 Science for Ireland, Dublin, and A. K. Hctntixgtox, F.C.S., Associate of 

 the Royal School of Mines ......... 



Researches into the Colouring-matters of Human Urine, with an Account 

 the Separation of Urobilin. By Chas. A. MAcMuirar, B.A., M.D. . 



26 



Obituary Notices : — 



David Thomas Ansted . 

 William Hallowes Miller 



fir 



Price Tivo Shillings. 



