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Details of Cayley's papers in the Monthly Notices and Memoirs of the RAS. Details of papers in other journals to follow. Description of Cayley's profession. CD's recent visit to the CO. JCA expects "very shortly to introduce a lady assistant".

Congratulations on CD's son's marriage. Acknowledgement of gift for CO of copy of 2nd vol. of CD's Lunar theory, for CD's communicating JCA's paper on November meteors, and sends more detailed account communicated to RAS.

[second draft of 16/14/1] Acknowledgement of offer of corresponding membership of [French] Academy of Sciences. Sends offprints of published papers. Description of work forthcoming. Defence of work on lunar theory against Plana.

See 36/16/2 for French translation. Acknowledgement of offer of corresponding membership of [French] Academy of Sciences. Personal thanks to CD for his influence.

See 36/16/3 for French translation. Pleased that CD's value of Secular acceleration of Moon's mean motion agrees with JCA's. Has carried the work further since publication and has a better method: sets out some more results for CD's use and for him to communicate to the [French] Academy of Sciences on JCA's behalf. Acknowledges copies of papers received from CD.

See 36/17/1 for French translation. Acknowledgement of copy of paper on acceleration of the moon sent by CD. JCA's latest equation. Death of JCA's father.

See16/22/3 for another copy. Sympathy at death of Charles Delaunay.

Proper comparison of Hansen's and Delaunay's equations of Longitude, Latitude and Parallax [of the moon] much needed. Description of such comparisons as already exist. JCA's own parallax tables. Tables of Moon's Ephemeris might be obtained from Hind: JCA will enquire. Hill's computation of the perturbations of Jupiter and Saturn very worthy.

Incomplete. See 16/17/1 for another draft of same letter. See 36/18/1 for French translation. Acknowledgement of copies of CD's replies to LeVerrier's attacks on his theory of the moon. Nature of LeVerrier, Hansen's and Plana's errors. M. de Pontecoulant's letter in Monthly Notices of RAS.

Speech proposing that Delaunay be made a foreign member of the RS.