From:
Sir John Herschel
To:
Jacques Babinet
Date:
[12 September 1832]
Source of text:
RS:HS 25.3.9
Summary:
Responds to JB's 1832-8-25 with comments about the optical properties of tourmaline. JH also talks about his astronomical work, including the collimator on his telescope and his double star work.
Contributor:
John Herschel Project