CONTENTS {continued). 



PAGE 



IIT. Further Researches into the Colouring-matters of Human Urine, with an 

 Account of their Artificial Production from Bilirubin, and from 

 Hajmatin.** By Charles A. MacMttnn, B.A., M.D. .... 206 



IV. Note on the Determination of Magnetic Inclination in the Azores. By 



T. E. Thoepe, Ph.D., F.R.S 237 



Y. On Heat Conduction in Highly Rarefied Air. By William Ceookes, 



F.R.S 239 



VI. On the Thermo -Electric Behaviour of Aqueous Solutions with Platinum 



Electrodes. By G. Goee, LL.D., E.R.S. . . . . . . 244 



YII. Influence of Yoltaic Currents on the Diffusion of Liquids. By G. Goee, 



LL.D., F.R.S. . . . ' . . . . . . . .250 



VIII. Experiments on Electric Osmose. By G. Goee, LL.D., E.R.S. . . 253 



List of Presents . . . . . . . . . . . .. 257 



Microscopical Researches in High Power Definition. By G. W. Rotstox- 



Pigott, M.A., M.D. Cantab., E.R.S. (Plates 3-4) . . . .260 



CATALOGUE OF SCIENTIFIC PAPERS, COMPILED BY THE ROYAL 



SOCIETY. 



Published by Her Majesty's Stationery Office. 

 8 vols., 4to. 1800—1873. Per vol. : 20?., cloth ; 28s., half-morocco. 

 On Sale by Murray, Albemarle Street, and Triibner and Co., LudgateHill. 



HARRISON AND SONS, 45 & 46, ST. MARTIN'S LANE, W.C 



AND ALL BOOKSELLERS. 



