CONTENTS. 



VOL. LTV. 



No. 326. June 1. 1893. 



Page 



Election of Fellows 



On the Colours of Sky Light, Sun Light, Cloud Light, and Candle Light. 

 By Captain W. de W. Abney, C.B., D.C.L., F.R.S., P.E.A.S 



Flame Spectra at High Temperatures. Part I. Oxy-hydrogen Blow- 

 pipe Spectra. By W. N. Hartley, F.R.S 



On the Flow in Electric Circuits of Measurable Inductance and 

 Capacity ; and on the Dissipation of Energy in such Circuits. By 

 Alfred W. Porter, B.Sc., Demonstrator of Physics in University 

 College, London 7 



On the Motion u rider Gravity of Fluid Bubbles through Vertical 

 Columns of Liquid of a different Density. By F. T. Trouton 12 



On the Metallurgy of Lead. By J. B. Hannay, F.R.S.E., F.I.C. 

 [Title only] * 25 



List of Presents 25 



June 8, 1893. 



Preliminary Report of the Joint Solar Eclipse Committee of the Royal 

 Society, the Royal Astronomical Society, and the Solar Physics Com- 

 mittee on the Observations of the Solar Eclipse of April 16, 1893. 

 By A. A. Common, F.R.S ,. 28 



On the Bright Bands in the present Spectrum of Nova Aurigse. By 

 William Huggins, D.C.L., LL.D., F.R.S., and Mrs. Huggins 30 



The Process of Secretion in the Skin of the Common Eel. By E. 

 Waymouth Reid, Professor of Physiology in University College, 

 Dundee * 36 



The Experimental Proof that the Colours of Certain Lepidopterous 

 Larvse are largely due to Modified Plant Pigments, derived from 

 Food. By E. B. Poulton, F.R.S 41 



The Influence of Exercise on the Interchange of the Respiratory Gases. 

 By W. Marcet, M.D., F.R.S 42 



The Glucoside Constitution of Proteid Matter. By F. W. Pavy, M.D., 

 F.R.S 53 



List of Presents .. 57 



