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Experimental Eesearclies on Spontaneous Generation. By Gilbert W. Child. 

 M.D. Oxon 313 



On a Colloid Acid, a Normal Constituent of Human Urine. By William 

 Mai'cet, F.R.S 314 



Fm'tlier observations on tbe Amyloid Substance met witb in the Animal 

 Economy. By Eobert MODonneU, M.D 317 



Description of a New Mercmial Gasometer and Air-pump. By T. R. 

 Eobinson, D.D., LL.D., F.R.S 321 



On tbe Distal Communication of tbe Blood-vessels witb tbe Lymphatics ; 

 and on a Diaplasmatic System of Vessels. By Thomas Albert Carter, 

 M.D., M.R.C.P 327 



Aerial Tides. By Pliny Earie Chase^ A.M., S.P.A.S 329 



On the Microscopical Stracture of Meteorites. By H. C. Sorby, F.R.S. . . 333 



On the Functions of the Cerebellum. By W. H. Dickinson, M.D 334 



On the Properties of Silicic Acid and other analogous Colloidal Substances. 

 By Thomas Graham, F.R.S 335 



Researches on the Colouring-matters derived from C oal-tar. — III. Diphenyl- 

 amine. By A. W. Hofmann, LL.D., F.R.S 341 



A Table of the Mean Declination of the Magnet in each Decade from 

 January 1858 to December 1863, derived from the Observations made at 

 the Magnetic Observatory at Lisbon ; showing the Annual Variation, or 

 Semiannual Inequality to which that element is subject. Drawn up by 

 the Superintendent of the Lisbon Observatory, Senhor da Silveira 347 



On Organic Substances artificiallv formed from Albumen. By Alfred H. 

 Smee, F.C.S 350 



On the Reduction and Oxidation of the Colouring-matter of the Blood. By 



G. G. Stokes, M.A., Sec. R.S 355 



Further Inquiries concerning the Laws and Operation of Electrical Force. 

 By Sir W. Snow Harris, F.R.S 364 



On a New Class of Compounds in which Nitrogen is substituted for 

 Hydrogen. By Peter Griess 375 



New Observations upon the Minute Anatomy of the Papillae of the Frog's 

 Tongue. By Lionel S. Beale, M.B., F.R.S., F.R.C.P 384 



Indications of the Paths taken by the Nerve-currents as they traverse the 

 caudate Nerve-cells of the Spinal Cord and Encephalon. By Lionel S. 

 Beale, M.B., F.R.S., F.R.C.P. (Plate HL) 386 



On the Phvsical Constitution and Relations of Musical Chords. By 

 Alexander J. EUis, F.R.S., F.C.P.S 392 



On the Temperament of Musical Instruments with Fixed Tones. By 

 Alexander J. EUis, F.R.S., F.C.P.S 404 



On the Calculus of Symbols. — Fomi;h Memoir. With Applications to the 

 Theory of Non-Linear Differential Equations. By W. H. L. Russell, 

 A.B. : : . 423 



On the Calculus of Symbols. — Fifth Memoir. With Application to Linear 

 Partial Differential Equations, and the Calculus of Functions. By W. 



H. L. Russell, A.B 432 



