xvii 



On the valuation of the mechanical effect of Gradients on a line of 

 Railroad. By Peter Barlow, Esq. F.R.S .page 390 



On the application of Glass as a substitute for metal balance-springs 

 in Chronometers. By Messrs. Arnold and Dent 391 



Note relative to the supposed origin of the deficient rays in the Solar 

 Spectrum ; being an account of an experiment made at Edinburgh 

 during the Annular Eclipse of May 15, 1836. By James D. Forbes, 

 Esq. Professor of Natural Philosophy in the University of Edin- 



burgh , 393 



On the connexion of the anterior columns of the Spinal Cord with the 

 Cerebellum ; illustrated by preparations of these parts in the human 

 subject, the Horse, and the Sheep. By Samuel Solly, Esq. Lectu- 

 rer on Anatomy and Physiology at St. Thomas's Hospital, M.R.I. 

 Fellow of the Royal Medical and Chirurgical Society, and Member 

 of the Hunterian Society , , ,,,» ..... 393 



Discussion of the Magnetical Observations made by Captain Back, 

 R.N. during his late Arctic Expedition. By Samuel Hunter 

 Christie, Esq. M.A. F.R.S 394 



On the Safety-valve of the right Ventricle of the Heart in Man ; and 

 on the gradations of the same apparatus in Mammalia and Birds. 

 By J. W. King, Esq 396 



Some Account of the appearances of the Solar Spots, as seen from He- 

 reford, on the 15th and 16th of May, 1836, during and after the 

 Solar Eclipse. By Henry Lawson, Esq. ................ 397 



On the Brain of the Negro, compared with that of the European and 

 the Ourang-Outang. By Frederick Tiedemann, M.D. Professor 

 of Anatomy and Physiology in the University of Heidelberg, and 

 Foreign Member of the Royal Society 398 



Researches on the Tides ; Sixth Series. On the Results of an exten- 

 sive system of Tide Observations, made on the Coasts of Europe 

 and America, in June 1835. By the Rev. William Whewell, F.R.S. 

 Fellow of Trinity College, Cambridge 399 



On the Tides at the Port of London. By J. W. Lubbock, Esq. M.A. 

 F.R.S. , , 399 



Discussion of the Magnetical Observations made by Captain Back, 

 R.N., during his late Arctic Expedition. Part. II. By Samuel 

 Hunter Christie, Esq. M.A. F.R.S. , 400 



On the Powers on which the Functions of Life depend in the more 

 perfect Animals, and on the Manner in which these Powers are 

 associated in their more complicated results. By A. P. W. Philip, 

 M.D. F.R.S , .......... 401 



On the Respiration of Insects. By George Newport, Esq 403 



Demonstration de l'egalite a deux droits de la somme des angles d'un 

 triangle quelconque, independamment de la theorie des paralleles, 

 et de la consideration de Pinfini. Par M. Paulet, de Geneve 404 



Experimental Researches into the Physiology of the Human Voice. 

 By John Bishop, Esq 404 



Du Son et de l'Electricite. Anonymous, with the signature of Hermes 



Being a Prize Essay for the Royal Medal , 406 



Physiological Remarks on several Muscles of the Upper Extremity. 

 By F. O. Ward, Esq. Medical Student at King's College, London.. 405 



VOL. III. B 



