From:
Sir William Huggins
To:
Sir John Herschel
Date:
[15 December 1868]
Source of text:
RS:HS 10.47
Summary:
Has arranged for the last R.A.S.M.N. to be sent to him. Lieut. John Herschel has detected a fourth line in the spectrum of the Nebula in Orion.
Contributor:
John Herschel Project