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Papers of Augustus De Morgan including letters and notebooks relating to various mathematical subjects and general correspondence 1864-1867.

1-4. Letters to Augustus de Morgan, mostly about mathematical books and the history of the signs + and -.

1. John Bellingham Inglis, 15 Sep 1864
   2-4. John Thomas Graves, 20 and 27 Sep and 8 Oct 1864
   5-7. Items concerning John Dawson of Sedbergh
   5. Thomas Harrison, 18 Apr 1867
   6. Edward Cust, 9 Sep 1867
   7. Short biography of John Dawson, manuscript copy of article in the 'Kendal Times', 24 Nov 1866
   8. MS notes by Augustus de Morgan, mostly concerned with mathematical books and the first use of the signs + and -.

Together with 14 request slips for books in the British Museum, one dated 1854 and the rest 1864.

A manuscript almanac.

Copy of Augustus de Morgan's 'On the symbols of logic, the theory of the syllogism and in particular of the copula and the application of the theory of probabilities to some questions of evidence', published as a memoir in the Cambridge Philosophical Transaction.

Unpublished copy of Augustus de Morgans 'On some logical difficulties of language'. " Wants revision Jan 1 / 68" is written at the top of folio 2.

Correspondence and papers of Augustus De Morgan, principally relating to De Morgan's appointment to the Chair of Mathematics at London University (University College London) in 1828 and to his resignation therefrom in 1831. Includes letters to De Morgan from Edward Turner, Leonard Horner, Warden of the College, and Dionysus Lardner, and drafts of De Morgan's memoranda to the authorities of the University during his dispute with them.

Annotated, inter-leaved copies of some of De Morgan's works, including letters and newspaper cuttings. The works include: 'Formal Logic', 1847 (2 volumes); 'Syllabus of a proposed system of logic', 1860; 'Arithmetical books from the invention of printing to the present time etc', 1847.

Papers of Augustus De Morgan including notes and additions made by de Morgan for his 'Arithmetical books'.

Papers and correspondence of Augustus De Morgan, including material connected with the teaching of mathematics and logic at University College London, c 1843-1866; notebooks containing mathematical notes and calculations, including school books and notebooks used at Cambridge, c 1822-1830; drafts of papers, c 1845-1854; material connected with De Morgan's work on logic, c 1847-1864; material connected with De Morgan's work on Newton, 1832-1856; material connected with 'The Book of Almanacs', c 1850; additions to 'Arithmetical Books' c 1853; correspondence to and from De Morgan, c 1847-1869; notebooks and loose papers of Numa Edward Hartog.

Copy of the draft of the first work published by Augustus de Morgan, 'The Elements of Arithmetic', 1830.

Unpublished copy of Augustus de Morgan's 'On the syllogism, No. 6: on quantity and location; on identity in relation to the syllogism; on the history of the mnemonic words of the fourth figure, of Logic at Cambridge, of the occult quality; on the triadic system of enunciation'.