Vll 



On an Application of the Theory of Scalar and Clinant Radical Loci. 

 By Alexander J. Ellis, B.A 393 



On some Varieties of Tannin. By John Stenhouse, LL.D., F.R.S. . . 401 



On Larixinic Acid, a crystallizable volatile principle found in the 

 Bark of the Larch Tree (Pinw Larix, Linn.). By John Sten- 

 house, LL.D., F.R.S 405 



On the Great Magnetic Disturbance of August 28 to September 7, 

 1859, as recorded by Photography at the Kew Observatory. By 

 Balfour Stewart, A.M -. 407 



On the Aquiferous and Oviducal System in the Lamellibranchiate 

 Mollusks. By George Rolleston, M.D., and C. Robertson, Esq. . . 411 



Notes of Researches on the Poly- Ammonias. No. XVI. Triatomic 

 Ammonias. By A. W. Hofmann, LL.D., F.R.S 413 



Notes of Researches on the Poly- Ammonias. No. XVH. Mixed 

 Triammonias containing Monatomic and Diatomic Radicals. By 

 A. W. Hofmann, LL.D., F.R.S 420 



Notes of Researches on the Poly- Ammonias. No. XVIII. Tetram- 

 monium-Compounds. By A. W. Hofmann, LL.D., F.R.S 423 



On the Lead-Zinc and Bismuth-Zinc Alloys. By A. Matthiessen, 

 Esq., F.R.S., and M. von Bose 430 



On some Gold-Tin Alloys. By A. Matthiessen, Esq.. F.R.S., and 

 M. von Bose . 433 



On the Sensory, Motory, and Vaso-Motory Symptoms resulting from 

 the Refrigeration of the Ulnar Nerve. By Augustus Waller, M.D., 

 F.R.S 436 



Note on the Oxidation and Disoxidation effected by the Peroxide of 

 Hydrogen. By B. C. Brodie, Esq., F.R.S 442 



Obituary Notices of Deceased Fellows : 



Sir Charles Barry i 



Sir Thomas Macdougall Brisbane iii 



Lieutenant-Colonel William Martin Leake vii 



Joseph Locke ix 



Charles May x 



Lord Macaulay xi 



The Rev. Baden Powell xxvi 



William Simms xxix 



William Spence xxx 



Theophilus Thompson, M.D xxxi 



Robert Bentley Todd, M.D xxxii 



Horace Hayman Wilson ; xxxv 



Louis Poinsot xxxvi 



Heinrich Rathke xxxvii 



On the Contact of Curves. By William Spottiswoode, M.A., F.R.S. 446 

 On the Calculus of Functions. By William Spottiswoode, M. A., F.R.S. 447 



On the Action of Hydriodic Acid upon Mannite. By J. A. Wanklyn, 

 Esq., and Dr. Erlenmeyer 447 



The Lignites and Clays of Bovey Tracey, Devonshire. By William 

 PengeUy, Esq 449 



