Manchester Memoirs, Vol. xliv. (1899), No. %. 



III. Correction in the Wilde Lecture of 1897, "On the 

 Nature of the Rontgen Rays. " 



Sir George Stokes writes : — 



" I must apologise to the Society for having over- 

 looked an error of pure inadvertence which 

 unfortunately is of such a nature as to puzzle the 

 reader, as there is nothing to suggest that it is a 

 mere slip. In p. 18, 1. 17,* the word 'cathode' 

 should have been ' target.' " 



* Maiichester Mtmoirs, Vol. xli. (1897), No. 15. 

 February 2jrd, igoo. 



