PROCEEDINGS OF 

 THE ROYAL SOCIETY. 



VOL. XV. No. 80. 



CONTENTS. 

 January 11, 1866. 



PAGE 



On the Colouring and Extractive Matters of Urine. — Part I. By Edwaed 

 SCHUNCK, F.R.S 1 



January 18, 1866. 



I. Sixth Memoir on Radiation and Absorption. By Professor J. Tyndall, 



F.R.S , 5 



II. On the Spectrum of Comet 1, 1866. By William Htjggins, F.R.S. . . ih. 



January 25, 1866. 



Ifote on the Secular Change of Magnetic Pip, as recorded at the Kew Ob- 

 servatory. By Balfotjr Stewabt, M.A., LL.D., F.R.S., Superintendent 

 of the Observatory 8 



The Table of Contents and Index to Vol. XIV. are herewith sent, to be bound up 

 with that Volume, 



TAYLOR AND FRANCIS, RED LION COURT, FLEET STREET. 



