On the Belts of Jupiter. By John Phillips, M.A., LL.D., F.R.S. 



Page 

 . 575 



Notes of Researches on the Poly-Ammonias. No. XXIII. Hy- 

 drazobenzol, a new Compound isomeric with Benzidine. By A. 

 W. Hofmann, LL.D., F.R.S ................................. 576 



Note on the Composition of Aniline-Blue. By A. W. Hofmann, 

 LL.D., F.R.S ...... ; ...................................... 578 



On the Calculus of Symbols, Third Memoir. By W. H. L. Russell, 

 A.B ............ . ....................... :. ............... 579 



Annual Meeting for the Election of Fellows .................... 580 



The Croonian Lecture. On the Coagulation of the Blood. By Pro- 

 fessor Joseph Lister, F.R.S ................................. 580 



On the Molecular Mobility of Gases. By Thomas Graham, F.R.S. . . 611 



Results of the Magnetic Observations at the Kew Observatory, from 

 1858 to 1862 inclusive. No. I . By Major-General Edward Sabine, 

 P.R.S ....................... ..... ....................... 623 



Results of the Magnetic Observations at the Kew Observatory, from 

 1858 to 1862 inclusive. No. II. By Major-General Edward Sa- 

 bine, P.R.S ................ . ................. , ............ 625 



Experiments, made at Watford, on the Vibrations occasioned by 

 Railway Trains passing through a Tunnel. By Sir James South, 

 LL.D., F.R.S ............................................. 630 



Preliminary Notice of an Examination of Ruhia munjista, the East- 

 Indian Madder, or Munjeet of Commerce. By John Stenhouse, 

 LL.D., F.R.S ............................................. 633 



Notes of Researches on the Poly-Ammonias. No. XXIV. On 

 Isomeric Diamines. By A. W. Hofmann, LL.D., F.R.S ....... 639 



Contributions towards the History of the Colouring Matters derived 

 from Aniline. By A. W. Hofmann, LL.D., F.R.S ............. 645 



Contributions towards the History of the Colouring Matters derived 

 from Coal-tar. By A. W. Hofmann, LL.D., F.R.S ........... 647 



On the Measurement of the Chemical Brightness of various portions 

 of the Sun's Disc. By Henry Enfield Roscoe, B. A., F.R.S ..... 648 



On the Contractility of Healthy and Paralysed Muscles as tested by 

 Electricity. By Harry Lobb ................................ 650 



On the Influence of Temperature on the Electric Conducting-Power 

 of Alloys. By A. Matthiessen, F.R.S., and C. Vogt, Ph.D ..... 652 



On the Peroxides of the Radicals of the Organic Acids. By Sir B. 

 C. Brodie, Bart, F.R.S.. . ..... , ..................... . ...... 655 



Explorations in Spitzbergen, undertaken by the Swedish Expedition 

 in 1861, with the view of ascertaining the practicability of the mea- 

 surement of an Arc of the Meridian. By Dr. Otto Torell ...... 658 



On the Magnetic Disturbance which took place on the 14th of 

 December 1862. By Balfour Stewart, M. A., F.R.S ............. 663 



