CONTENTS. 



VOL. LIL 



No. 315. June 2, 1892. 



Election of Fellows 1 



On the Method of Examination of Photographic Objectives at the Kew 

 Observatory. By Major L. Dai-win , 2 



Supplementary Report on Explorations of Erect Trees containing 

 Animal Remains in the Coal-Formation of Nova Scotia. By Sir J. 

 William Dawson, F.R.S 4 



The Hippocampus. By Alex. Hill, M.D., Master of Downing College 5 



On a new Form of Air Leyden, with Application to the Measure- 

 ment of small Electrostatic Capacities. By Lord Kelvin, P.RS 6 



On certain Ternary Alloys. Part VI. Alloys containing Aluminium, 

 together with Lead (or Bismuth) and Tin (or Silver). By C. R. 

 Alder Wrigjit, D.Sc., F.R.S., Lecturer on Chemistry and Physics in 

 St. Mary's Hospital Medical School 11 



The Conditions of the Formation and Decomposition of Nitrous Acid. 

 By V. H. Veley, M.A., University Museum, Oxford 27 



On the Theory of Electrodynamics, as affected by the Nature of the 

 Mechanical Stresses in Excited Dielectrics. By J. Larmor, M.A., 

 Fellow of St. John's College, Cambridge 55 



On Current Curves. By Major R. L. Hippisley, R.E. [Title only] .... 67 



List of Presents 67 



June 16, 1892. 



On a Multiple Induction Machine for producing High Tension Elec- 

 tricity, and on some remarkable Results obtained with it. By the 

 Lord Armstrong, C.B., F.R.S. [Title only} 70 



On certain Appearances of Beams of Light, seen as if emanating from 

 Candle or Lamp Flames. By the late Professor James Thomson, 

 F.R.S 70 



Voltaic Cells with Fused Electrolytes. By J. Brown 75 



The Physiological Action of the Nitrites of the Paraffin Series con- 

 sidered in connexion with their Chemical Constitution. Part II. 

 Action of the Nitrites on Muscular Tissue and Discussion of Results. 

 By J. Theodore Cash, M.D., F.R.S., Professor of Materia Medica in 

 the University of Aberdeen, and Wyndham R. Dunstan, M.A., 

 Professor of Chemistry to the Pharmaceutical Society of Great 

 Britain 91 



On the Estimation of Uric Acid in Urine : a new Process by means of 

 Saturation with Ammonium Chloride. By F. Gowland Hopkins, 

 B.Sc., Gull Research Student at Guy's Hospital 93 



