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[JCA's comments on De La Rue's speech on awarding Gold Medal of RAS] Acknowledges copy of Hansen's letter sent. Disagrees with H's assertion that he never contested JCA's theory of the secular acceleration of the moon: H caused LeVerrier to attack JCA and Delaunay, and is now adapting his own theory without admitting it might be wrong.

Comments on De La Rue's speech on awarding Gold Medal of RAS to JCA. Whether a quotation from Herschel should be included. Whether LeVerrier should be mentioned in light of his and Delaunay's part in the controversy over the secular variation of the moon's mean motion. Accuracy of Hansen's and Plana's theories. Encloses copy of Delaunay's 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. See 16/17/2 for another version of this letter.

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.

See 36/18/3 for French translation. Acknowledgement of CD's calculation of secular acceleration of moon's mean motion by Poisson's method. Thinking of sending four different methods of calculation of same for inclusion in Nautical Almanac. Pontecoulant unlikely to be persuaded of JCA's and CD's method. LeVerrier likely to come to unpleasant discovery of the truth.

Letter of introduction for Pierce. Plana convinced of JCA's and CD's expression of the secular acceleration of moon's mean motion. Hansen and LeVerrier might yet be convinced.

Acknowledgement of copies sent by CD of investigation into Hansen's long inequalities and corrections of LeVerrier's Annales, and CD's volume on the Theory of the Moon. Praise of CD's method.

Planetary motion - [Neptune? moon?]. JCA less pleased with LeVerrier's second solution than his first. Note in JCA's hand "a much enlarged copy sent".

Extra copies of JCA's address on presentation to UJJL [gold medal of RAS] have been ordered for him.

Astronomical notes, some dated Mar. 1854. "Comparison with Bouvard's Tables of Saturn with the formulae in the introduction." "Synoptic statement of the planetary masses employed by LeVerrier in various reseaches." "Mean motion & masses of the planets 8 Mar. 1854" "Calculation of the perturbations of Uranus by Neptune" "Calculation of the orbit of Comet 1856 from Cambridge Obsns. Apl. 1854".