From [J.?] Herbert to [Spencer J. A. Compton?]   n.d.

The transcript of this letter is not available online on Ɛpsilon.

Please cite as “Herschel14775,” in Ɛpsilon: The Sir John Herschel Collection accessed on 21 September 2021, https://epsilon.ac.uk/view/herschel/letters/Herschel14775