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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.

Papers of Daniel Whistler, including commonplace books of prescriptions, diagnoses, exercises in metaphysics and logic, philology, definitions of terms, notes on heraldry and extracts from Aristotle and Hippocrates (in Greek) and from Mercurialis, Fernelius, Sennentus, and others (in Latin); extracts from Tacitus, Caesar, Suetonius, Plutarch, Strabo, Pliny, Quintilian, Aeschylus and Valerius Maximus, in the hand of Whistler; In Aristotelis lib.3 Physicorum Commentarius Analyticus in the hand of Whistler; cash book, pharmacopoeia and medical aphorisms.