CONTENTS (continued). 



March 20, 1879. 



PAGE 



I. Note on some Spectral Phenomena observed in the Arc produced by a 



Siemens' Machine. By J. Norman Lockyee, F.R.S 425 



II. Note on some Phenomena attending the Reversal of Lines. By J. 



Noeman Lockyee, F.R.S. . ...... 428 



III. Discussion of Young's List of Chromospheric Lines. (Note I.) By 



J. Noemax Locktee, F.R.S. (Plate 9.) 432 



March 27, 1879. 



I. On the Organization of the Fossil Plants of the Coal Measures. Part X. 

 By W. C. Williamson, F.R.S., Professor of Natural History in Owens 



College, Manchester 445 



II. Observations on the Physiology and Histology of Conroluta Sclurftzii. 



By P. Geddes . . . . . 449 



List of Presents 457 



Obituary Notice : — 



Rey. William Beax white Clabke. 



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