Showing 36 results

Secular inequality of the moon's mean motion. Appreciation of Pontecoulant's work. Letter or extract of letter transcribed for MacAlister's biography.

Pontecoulant's letter. Letter or extract of letter transcribed for MacAlister's biography.

Pontecoulant's letter; motion of the moon. JCA's defence. Letter or extract of letter transcribed for MacAlister's biography.

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 36/18/2 for French translation. Sends copies of reply to Pontecoulant, Plana etc: one for CD personally, one for the French Academy of Sciences.

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.

See 16/19/3 for another copy. Authorisation for CD to publish JCA's expression of coefficient of principal term of the latitude [of the moon?]. Adds equation for principal inequality of the true latitude, and comparisons with Plana and Pontecoulant's results.

Another copy of 16/19/2. Authorisation for CD to publish JCA's expression of coefficient of principal term of the latitude [of the moon?]. Adds equation for principal inequality of the true latitude, and comparisons with Plana and Pontecoulant's results.

Not written to JCA: probably to Smyth who is named as author of the Speculum. Acknowledgement of gift of copy of WHS and JL's Speculum Hartwellianum (A cycle of celestial objects... 1860).

Articles by brothers Pontecoulant in Encyclopedie du xixme siecle discredit JCA's part in the discovery of Neptune. As disgraceful as their tone in the controversy with JCA over Moon's acceleration. Encloses something for Dr. Lee.