vi 



Page 



Theory of Magnetism based upon New Experimental Kesearches. By 

 Professor D. E. Hughes 178 



Remarks on the Soundings and Temperatures obtained in the Faeroe 

 Channel during the Summer of 1882. By Staff Commander T. H. 

 Tizard, B.N., H.M.S. "Triton" (Plates 4-8) 202 



Preliminary Note on the Innervation of the Mammalian Heart. By L. 

 C. Wooldridge, D.Sc., M.B., George Henry Lewes Student 220 



Note on the Motor Roots of the Brachial Plexus, and on the Dilator 

 Nerve of the Iris. By David Ferrier, M.D., LL.D., F.E.S., Professor 

 of Forensic Medicine in King's College 229 



List of Presents 232 



No. 226.— May 24, 1883. 



On the Function of the Sound-post and on the Proportional Thickness of 

 the Strings of the Violin. By William Huggins, D.C.L., LL.D., 

 F.B.S 241 



Note on the Atomic Weight of Glucinum or Beryllium. By J. Emerson 

 Beynolds, M.D., F.B.S 248 



The Effects of Temperature on the Electromotive Force and Resistance of 

 Batteries. II. By William Henry Preece, F.RS 250 



Examination of the Meteorite which fell on the 16th February, 1883, at 

 Alfianello, in the District of Verolannova, in the Province of Brescia, 

 Italy. By Walter Flight, D.Sc, F.G.S 258 



Circular concerning Astronomical Photography. From E. C. Pickering, 

 Director of Harvard College Observatory, Cambridge, Mass., U.S.A 260 



May 31, 1883. 



The Bakerian Lecture. — On Radiant Matter Spectroscopy. A new 

 Method of Spectrum Analysis. By William Crookes, F.R.S 262 



Experiments upon the Heart of the Dog with reference to the Maximum 

 Volume of Blood sent out by the Left Ventricle in a Single Beat, and 

 the Influence of Variations in Venous Pressure, Arterial Pressure, and 

 Pulse Rate upon the Work done by the Heart. By William H. 

 Howell, A.B., Fellow of the Johns Hopkins University, and F. Donald- 

 son, Jr., A.B 271 



June 7, 1883. 



Annual Meeting for the Election of Fellows 275 



June 14, 1883. 



Researches on the Foraminifera. Supplemental Memoir. On an Abyssal 

 Type of the Genus Orbitolites ; a Study in the Theory of Descent. By 

 W. B. Carpenter, C.B., M.D., F.RS 276 



