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Discusses the purchase of a ticket for the Commencement fete and the procurement of lodgings during it

Asks for information regarding a 'fish-eye-stone' (a crystal) which Lowry has sent to Herschel

Contents:

1. Hyposulphurous and Paper (Using polarized light in analysis of crystals).

2. Early 'Chrystal' paper (pre-1819).

3. History of Math (two drafts).

4. Mathematical Papers

5. On Coloured Flames (16 numbered pages, a page of sketches of curves (transmitted intensity v. colour))

6. 15 pages of 'computations for optical papers of 1820' for absorption curves and apophyllite (3 varieties), Rochelle salt

Contents:

1. 'On the rotation in Plagiedial Quartz', Transactions of the Cambridge Philosophical Society, Vol 1, 43-52, read 17 April 1820.

2. 'On the Development of Tints', Transactions of the Cambridge Philosophical Society, Vol. 1, 20-41, read 24 February 1820.

More sketches here than in published papers with many pages crossed out entirely

Discusses the reprinting of Piazzi's catalogue of stars and whether the University Press will bear part of the expense

Asks Whittaker to settle his account for the printing of the Memoirs of the Analytical Society

Mentions death of Clark, the support Herschel can offer to Henslow in the forthcoming elections at Cambridge (1) and the settling of an account.

(1) Probably refers to the election of John Stevens Henslow to the chair of Mineralogy in 1822

Contents:

1. Consideration of various points in analysis. Published (with alterations) in Philosophical Transactions (1814). 25 numbered pages.

2. On the action of crystals with two axes on homogeneous light and on the cause of the deviation from Newton's scale in the tints which they develop on exposure to a polarized ray, Philosophical Transactions 110 (1820, 45-100. Read 23 December 1819. Pages of observations and/or calculations 'with some duplicate and some miscellaneous papers'. Two drafts, included a few corrected proof sheets, of this most important paper and some notes to the printer.

3. On aberration. A draft with some proof sheets, with comparatively few corrections and annotations, but possibly important ones.

4. Observations of the apparent distances and positions of double and triple stars made in the years 1821, 1822, 1823, Philosophical Transactions 114 (1824), part 3, 1-21.

5. On the separation of iron from other metals. Draft MSS for Philosophical Transactions 111 (1821), 293-9. Read 5 April 1821.

6. MSS notes for 1824 Bakerian Lecture to the Royal Society on electricity (c. 15 – 20 leaves, heavily corrected).

7. On the development of exponential functions together with several new theorems relating to finite differences (2 copies, c. 30 pages each).

8. On the general laws of the isochromatic bands in 'chrystals', 17 April 1819 (never published). This is interleaved in the main Philosophical Transaction article, the pagination of which is most confused. There are apparently only 4 sheets, both sides each, of a very rough draft with unfinished sketches

Contents:

1. Double Star Catalogue, submitted by John Herschel whilst he was secretary of the Royal Society 1824-1825

Contents:

1. Essay; 'Sound'

2. Essay; 'Light' (2nd half of essay - mostly sections on polarized light)

3. Comet orbits

4. Part III of 'On the Theory of the Moon'

5. Part I of 'Light' with doodles and a letter from Lardner.

6. A notebook for the section 'reflexion of light'

7. On letters from South