XXIX 



LIST OF PLATES. 



PLATES I.— IV. 



Illustrating Professor A. A. Michelsou's paper on the Application of Interference 

 Methods to Spectroscopic Measurements, 



Errata in 3891 {Cardiff) Report. 



Page 154, line 10, for Garden, read Cardew. 



Page 564, last line hut one, for Secret, read Recent. 



Errata in 1892 (Edinburgh) Beport. 

 Page 138, line S,for M, G. Guillaume, 7-ead C, E, Guillaume. 



