CONTENTS, 
IX. Some Account of a new Volcano in the Mediterranean. By John Davy, 
M.D. F.R.S., Assistant Inspector of Army Hospitals . . . page 23/ 
X. Further Notice of the new Volcano in the Mediterranean. By John Davy, 
M.J). F.R.S., Assistant Inspector of Army Hospitals . 251 
XI. Some Remarks on an Error respecting the Site and Origin of Graham 
Island. By Captain W. H. Smyth, R.N. F.R.S. F.S.A. . . . 255 
XII. An Account of some Experiments and Observations on the Torpedo (Raia 
Torpedo, Linn.) By John Davy, M.D. F.R.S., Assistant Inspector of 
Army Hospitals . 259 
XIII. Experimental Researches in Voltaic Electricity and Electro-Magnetism. 
By the Rev. William Ritchie, LL.D. F.R.S. Professor of Natural and, 
Experimental Philosophy in the Royal Institution of Great Britain, and 
Professor of Natural Philosophy and Astronomy in the University of 
London . 279 
XIV. Of the Organs of the Human Voice. By Sir Charles Bell, K.G.H. 
F.R.S. L. 8$ E . 299 
XV. Theory of the inverse Ratio ivhich subsists between the Respiration and 
Irritability, in the Animal Kingdom. By Marshall Hall, M.D. 
F.R.S.E. M.R.I. Communicated by J. G. Children, Esq. Sec. R.S. 321 
XVI. On Hybernation. By Marshall Hall, M.D. F.R.S.E. M.R.I. Com¬ 
municated by J. G. Children, Esq. Sec. R.S . 335 
XVII. Researches in Physical Astronomy. By J. W. Lubbock, Esq. V.P. and 
Treas.R.S . 361 
XVIII. On the Nervous System of the Sphinx ligustri, Linn., and on the 
