402 



Sir Norman Lockyer. 













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Colour. 



In the first part of the period covered by the later observations, the 

 colour of the Nova has been generally described as yellowish-red, red 

 with a yellow tinge, and yellow with a reddish tinge. Since April 25 

 the colour has been perhaps more red than formerly, and sometimes 

 noted as very red. 



It is interesting to remark that the colour varies periodically with 

 the change in magnitude. At maximum it is of a distinct yellowish- 

 red hue, but at or near minimum the yellowish tinge disappears and 

 the Nova appears very red. 



