CONTENTS (continued). 



PAGE 



On the Separation of the Least Volatile Grases of Atmospheric Air, and their 

 Spectra. By Gk D. Liveing, M.A., Sc.D., F.K.S., Professor of Chemis- 

 try in the University of Cambridge, and James Dewae, M.A., LL.D., 

 F.R.S., Jacksonian Professor in the University of Cambridge, Fullerian 

 Professor of Chemistry, Royal Institution, London 389 



Further Observations on Nova Persei. No. 3. By Sir Nobman Lockyee, 



K.C.B., F.RS f . 399 



Total Eclipse of the Sun, May 28, 1900. — Account of the Observations 

 made by the Solar Physics Observatory Eclipse Expedition and the 

 Officers and Men of H.M.S. " Theseus " at Santa Pola, Spain. By Sir 

 Norman Lockyee, K.C.B., F.R.S .404 



Preliminary Statement on the Prothalli of OpTiioglossum pendulum (L.), 

 Helminthostachys zeylanica (Hook.), and JPsilotum t sp. By William 

 H. Lang-, M.B., D.Sc, Lecturer in Botany, Queen Margaret College, 

 University of Glasgow. Communicated by Professor F. O. Bowee, 

 Sc.D., F.R.S. . . .405 



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