Papers relating to computing, observational method and instructions.

1. 'To find the variation of the declination of the Moon between the transit of her limb and that of her centre', and to find the Moon's semi-diameter in right ascension. There are two copies, dated 20 April and 3 August 1800.

2. 'From the right ascension of the Moon's first or second limb or centre and the observed zenith distance of her upper or lower limb or centre deduced from observation and corrected for refraction, to find the mean and apparent time of the observation, the longitude and latitude of the Moon's centre by the Nautical Almanac and the longitude and latitude of the Moon's centre resulting from the observation' (two copies).

3. 'To find the Moon's longitude and latitude to any given apparent time from the Nautical Almanac', 15 August 1808.

4. 'Rule to calculate the Moon's horizontal diameter from the time which her diameter takes to pass the meridian or any other horary circle.'

5. 'To compute the immersion of a star at or the emersion from behind the Moon's limb.'

6. 'Dr Maskelyne's last rule to compute the distance of the Moon from a star by spherical trigonometry, their difference of longitude and their latitudes being given', 22 March 1810.

7. Joseph de Lalande's rule to find the Sun's longitude by M. Guerrin's tables of right ascension, written on a piece of card.

8. Instructions and formulae for compiling a table of annual precession.

9. Instructions for reducing transits and computing longitude and latitude from observations.

10. 'To calculate the time of Sun's diameter passing the meridian, from the Sun's diameter given in the Nautical Almanac', 24 June 1805.

11. Corrections to James Bradley's transit observations, 1750-1759.

12. Time taken by the Moon's limb to move from wire to wire in the transit telescope, April 1794 (noted on a card).

13. 'Time of passage of a star or planet from one wire to another of a transit instrument', 1788.

14. "Rules to be observed in choosing the rate of the clock for reducing the observations.'

15. 'Given the reduction of the clock at the transit of the stars with which the Moon or a planet is to be compared, to find the reduction at the transit of the planet' (noted on a card).

16. Rules to find the rate of the clock to be used when it differs on successive days.

17. Finding the mean time of an observation by a transit of the Sun on the following day or some days after.

18. Finding the mean time of an observation, knowing the time of the Sun's transit and the clock rate.

19. Reduction of a clock at the transit of the Sun and Moon (noted on a card).

20. Reduction of a clock at the transit of the stars and planets (a fair copy noted on a card).

21. 'Corrections necessary to be applied to the right ascension and declination of a planet, as immediately deduced from observations made with an equatorial instrument by comparison with a known fixed star, on account of refraction', three copies, one a fair copy.

22. Nine rules for reducing observations, 12 September 1781.