Has made the changes JH suggested. Autobiography will be published posthumously. Met [Henry W.] Longfellow. Wishes the Herschels would visit because it might improve JH's health.

Sends Christmas greetings to family. Still has her intellect and is staying busy. Thanks Margaret Brodie Herschel for visiting Agnes [Greig].

Is happy that his discovery of 70 Ophiuchi was included in JH's catalogue of double stars. Thanks for correction on a logarithm of the focal point equation; intends to change this in Astronomische Nachrichten.

Apologizes for not acknowledging JH's work. Asks for copy of Royal Geographical Society's papers. Discusses [François] Arago's work on light beams and prisms. Requests JH's opinion concerning [Wilhelm] Klinkerfues's theory of light, which seems to make [Augustin] Fresnel's hypothesis superfluous.

Obtained and sent JH 2 copies of Physique sociale. Thanks JH for observations but they are too scientific for his lectures.

Is trying to get JH 2 copies of Physique sociale. Discusses additions. Addresses JH's comments concerning power of a supreme being. Sends 19th volume of annals of observatory and AQ's work on international congress on statistics.

Thanks JH for his positive judgement of his work. Mentions that [François] Moigno could only say that it was anti-religious. Another work on statistics has emerged: Versuch einer Sozialethik, 2nd. vol., by Alexander von Ochingen. In few days leaves for international conference on statistics.

Encloses reference to one of JH's letters to JT that has already been printed.

Thanks for JH's suggestions on JT's outline of comet speculations. [G. B.] Airy, too, has replied. Includes more speculations on 'envelopes' and nucleus of comet.

Is delighted with JH's exposition of colors of thin plates and of measurements of a wave of light in Familiar Lectures. Asks permission to quote from it.

In response to JH's comments on JT's explanation of comets says faintness of head and nucleus does not indicate non-existence; eye may not see all. Experiments with polarized light produce 'gorgeous' 'residual blue.'

Admiring 'working man' requests signature to be placed under JH's portrait as 'a remembrance of a great astronomer.'

Regrets that JH has not received annual volume of astronomical observations for 1865, sent months ago. Is sending another.

Sends Mary Somerville's autobiography; visited her in Naples. JP will return to England in the summer.

Describes his visit to Exeter. Hopes JH received a package sent the previous week. Asks question concerning lens making.

Suggests remedy for bronchitis problem in JH family. Young John Herschel's work on nebulae pleases CP. Comments on William Huggins's work on solar spectra.

Distributed a pamphlet on his theory of criminal punishment. Believes present system not effective. Draws favorable response.

Has discovered William Herschel's memoirs in R.A.S. library; arranged and read them. Asks JH whether any copies exist so the originals can be checked for completion before binding. Questions JH on William Herschel's opinion of the nature of nebulae and boundaries of the galaxy.

Is sending his lectures on magnetism he gave at Cambridge.

Concerning JH's Mahomet's coffin theory.