146 Meeting of March 14, 1901, and List of Papers read. 



is, however, a sufficient reason why at a particular stage in the 

 spectrrm of such Novae the enhanced lines of certain substances 

 should predominate. Thus, in y Cygni, titanium is most strongly 

 represented by enhanced lines ; in a Cygni, iron, chromium, and nickel ; 

 in p Orionis, silicium and magnesium, and so on. We may thus 

 expect to find the lines of different substances most prominent at 

 different stages in the history of the star. 



In the work above referred to I have been assisted as follows : — 

 The new photographs have been taken by Dr. Lockyer and Messrs. 

 Fowler, Baxandall, Shackleton, Butler, Shaw, and Hodgson. The 

 detailed examination of the photographs has been made by Messrs. 

 Fowler and Baxandall. The visual observations have been chiefly 

 made by Messrs. Fowler and Butler. The photographs have been en- 

 larged and the illustrations for this paper prepared by Sapper Wilkie. 

 To all, my best thanks are due. 



March 14, 1901. 



Sir WILLIAM HUGGINS, K.C.B., D.C.L., President, in the Chair, 



A List of the Presents received was laid on the table, and thanks 

 ordered for them. 



The following Papers were read : — 



I. " The Action of Magnetised Electrodes upon Electrical Discharge 

 Phenomena in Earefied Gases." By C. E. S. Phillips. Com- 

 municated by Sir W. Crookes, F.R.S. 



II. " The Chemistry of Nerve-degeneration." By Dr. Mott, F.R.S., 

 and Professor Halliburton, F.R.S. 



III. " On the Ionisation of Atmospheric Air." By C. T. R, Wilson, 



F.R.S. 



IV. " On the Preparation of Large Quantities of Tellurium." By 



E. Matthey. Communicated by Sir George Stokes, Bart., 



F. R.S. 



