From:
Sir John Herschel
To:
Alexander von Humboldt
Date:
1844-6-10 or [1844-5
Source of text:
RS:HS 22.197
Summary:
Extensive letter answering the many queries about nebulae raised by AH in his 1844-4-18 [letter contains notes made by AH].
Contributor:
John Herschel Project