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26.

Letter to Henry Oldenburg, dated 13 April 1672

Author: Isaac Newton

Source: EL/N1/38, Royal Society Library, London, UK

Newton Catalogue ID: NATP00310

27.

Letter to Henry Oldenburg, dated 11 June 1672

Author: Isaac Newton

Source: EL/N1/39, Royal Society Library, London, UK

Newton Catalogue ID: NATP00311

28.

Letter to to Henry Oldenburg for Ignatius-Gaston Pardies, dated 10 June 1672

Author: Isaac Newton

Source: EL/N1/40, Royal Society Library, London, UK

Newton Catalogue ID: NATP00312

29.

Letter to to Henry Oldenburg, dated 30 July 1672

Author: Isaac Newton

Source: EL/N1/41, Royal Society Library, London, UK

Newton Catalogue ID: NATP00313

30.

Copy of an extract from Newton to John Collins, dated 10 December 1672

Author: Isaac Newton

Source: EL/N1/42-44, Royal Society Library, London, UK

Newton Catalogue ID: NATP00314

31.

Copy of an extract of a letter to John Collins, dated 10 December 1672

Author: Isaac Newton

Source: EL/N1/45, Royal Society Library, London, UK

Newton Catalogue ID: NATP00315

32.

Copy of a letter to John Collins, dated 9 April 1672

Author: Isaac Newton

Source: EL/N1/46, Royal Society Library, London, UK

Newton Catalogue ID: NATP00316

33.

Answer to Huygens' critique of Newton's new theory of light and colours, dated 10 June 1673

Author: Isaac Newton

Source: EL/N1/47, Royal Society Library, London, UK

Newton Catalogue ID: NATP00317

34.

Response to Linus's second letter concerning Newton's new theory of light and colours, dated 13 November 1675

Author: Isaac Newton

Source: EL/N1/48, Royal Society Library, London, UK

Newton Catalogue ID: NATP00318

35.

Letter to Oldenburg concerning Thomas Mace's Otocousticon, dated 30 November 1675

Author: Isaac Newton

Source: EL/N1/49, Royal Society Library, London, UK

Newton Catalogue ID: NATP00319

36.

Note about his reflecting telescope

Author: Isaac Newton

Source: EL/N1/50, Royal Society Library, London, UK

Newton Catalogue ID: NATP00320

37.

Letter to Oldenburg answering Linus's second letter on Newton's new doctrine of light and colour

Author: Isaac Newton

Source: EL/N1/51, Royal Society Library, London, UK

Newton Catalogue ID: NATP00321

38.

Letter to Oldenburg on his experiments to show colour and light

Author: Isaac Newton

Source: EL/N1/52, Royal Society Library, London, UK

Newton Catalogue ID: NATP00322

39.

Letter to Oldenburg on the lengths and angles of prism images, dated 18 August 1676

Author: Isaac Newton

Source: EL/N1/53, Royal Society Library, London, UK

Newton Catalogue ID: NATP00323

40.

Letter to Oldenburg on delays conducting experiments

Author: Isaac Newton

Source: EL/N1/54, Royal Society Library, London, UK

Newton Catalogue ID: NATP00324

41.

Letter to Edmund Halley on the doctrine of projectiles and motions of the heavens

Author: Isaac Newton

Source: EL/N1/55, Royal Society Library, London, UK

Newton Catalogue ID: NATP00325

42.

Letter to Edmund Halley on work on ellipses and the descent of falling bodies

Author: Isaac Newton

Source: EL/N1/56, Royal Society Library, London, UK

Newton Catalogue ID: NATP00326

43.

Letter to Edmund Halley about Newton's correspondence with Huygens on vis centrifuga

Author: Isaac Newton

Source: EL/N1/57, Royal Society Library, London, UK

Newton Catalogue ID: NATP00327

44.

Letter to Edmund Halley on changes to the Principia

Author: Isaac Newton

Source: EL/N1/58, Royal Society Library, London, UK

Newton Catalogue ID: NATP00328

45.

Letter to Edmund Halley on corrections to the Principia

Author: Isaac Newton

Source: EL/N1/59, Royal Society Library, London, UK

Newton Catalogue ID: NATP00329

46.

Letter to Edmund Halley on the sun's parallax to the moon and other matters

Author: Isaac Newton

Source: EL/N1/60, Royal Society Library, London, UK

Newton Catalogue ID: NATP00330

47.

De Trigonometriâ Sphæricâ Rectangulâ

Author: Isaac Newton

Source: EL/N1/61, Royal Society Library, London, UK

Newton Catalogue ID: NATP00331

48.

Letter to Charles Montagu describing the solution to the mathematical problems proposed by John Bernoulli

Author: Isaac Newton

Source: EL/N1/61a, Royal Society Library, London, UK

Newton Catalogue ID: NATP00332

49.

Concerning experiments to show heat

Author: Isaac Newton

Source: EL/N1/62, Royal Society Library, London, UK

Newton Catalogue ID: NATP00333

50.

Observations of the sun and moon at the spring equinox

Author: Isaac Newton

Source: EL/N1/63, Royal Society Library, London, UK

Newton Catalogue ID: NATP00334

[1] 2 pp.

[2]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 1 (Cambridge: 1959), p. 140

A Latin Letter … by Ignatius Gaston Pardies … containing some Animadversions upon Mr. Isaac Newton … his Theory of Light [Philosophical Transactions 84 (17 June 1672)] Mr Newtons Letter of April 13. 1672 … being an Answer to the fore-going Letter of P. Pardies [Philosophical Transactions 84 (17 June 1672)]

[3]

in English

[4] 2 pp.

[5]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 1 (Cambridge: 1959), p. 193

Letter to to Henry Oldenburg for Ignatius-Gaston Pardies, dated 10 June 1672 [EL/N1/40]

[6]

in English

[7] 2 pp.

[8]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 1 (Cambridge: 1959), p. 163 and Philosophical Transactions of the Royal Society, No. 85 (15 July 1672), pp. 5014-5018.

Letter to Henry Oldenburg, dated 11 June 1672 [EL/N1/39] A second Letter of P. Pardies [Philosophical Transactions 85 (15 July 1672)] Mr. Newton's Answer to the foregoing Letter [of Ignace Pardies] [Philosophical Transactions 85 (15 July 1672)]

[9]

in English

[10] 2 pp.

[11]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 1 (Cambridge: 1959), p. 221

[12]

in English

[13] 5 pp. on 3 ff.

[14]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 1 (Cambridge: 1959), pp. 247-50.

[15]

in English with a little Latin

[16] 2 pp.

[17]

in English

[18] 4 pp.

[19]

in English

[20] 4 pp.

[21]

Published in Philosophical Transactions of the Royal Society, No. 96 (21 July 1673), pp. 6087-6092.

An Extract of a Letter lately written by an ingenious person from Paris [Christiaan Huygens] [Philosophical Transactions 96 (21 July 1673)] Mr. Newtons Answer to the foregoing Letter [of Christiaan Huygens] [Philosophical Transactions 96 (21 July 1673)]

[22]

in English

[23] 2 pp.

[24]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 1 (Cambridge: 1959), p. 356 and Philosophical Transactions of the Royal Society, No. 121 (24 January 1675/6), pp. 501-502.

A letter of Mr. Franc. Linus … being a reply to the Letter printed in Numb. 110 [Philosophical Transactions 121 (24 January 1675/6)] Mr. Isaac Newton's Considerations on the former Reply [of Francis Linus] [Philosophical Transactions 121 (24 January 1675/6)]

[25]

in English

[26] 2 pp.

[27]

in English

[28] 1 p.

[29]

in English and French

[30] 2 pp.

[31]

in English

[32]

Published in Philosophical Transactions of the Royal Society, No. 123 (25 March 1676), pp. 556-561 and partially published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 1 (Cambridge: 1959), p. 421.

A letter of Mr. Franc. Linus … being a reply to the Letter printed in Numb. 110 [Philosophical Transactions 121 (24 January 1675/6)] A particular Answer of Mr. Isaak Newton to Mr. Linus his Letter [Philosophical Transactions 123 (25 March 1676)]

[33] 2 pp.

[34]

in English

[35]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 2 (Cambridge: 1960), p. 6.

[36] Letter to Oldenburg on delays conducting experiments [EL/N1/54]

[37] 6 pp.

[38]

in English with some Latin

[39]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 2 (Cambridge: 1960), p. 76 and Philosophical Transactions of the Royal Society, No. 128 (25 September 1676), pp. 698-705.

A Letter from Liege concerning Mr Newton's Experiment of the colour'd Spectrum [Philosophical Transactions 128 (25 September 1676)] Mr Newton's Answer to the precedent Letter [Philosophical Transactions 128 (25 September 1676)]

[40] 2 pp.

[41]

in English

[42]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 2 (Cambridge: 1960), p. 83.

Letter to Oldenburg on his experiments to show colour and light [EL/N1/52]

[43] 4 pp.

[44]

in English with a little Latin

[45]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 2 (Cambridge: 1960), p. 435

[46] 2 pp.

[47]

in English

[48]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 2 (Cambridge: 1960), p. 444

[49] 3 pp.

[50]

in English with a little Latin

[51]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 2 (Cambridge: 1960), p. 446

[52] 3 pp.

[53]

in English and Latin

[54]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 2 (Cambridge: 1960), p. 453

[55] 2 pp.

[56]

in English

[57]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 2 (Cambridge: 1960), p. 464

[58] 3 pp.

[59]

in English

[60]

Published in H.W. Turnbull (ed), The Correspondence of Isaac Newton, vol. 2 (Cambridge: 1960), p. 470

[61] 1 p.

[62]

in English

[63] 2 p.

[64]

in Latin

[65]

Published in Philosophical Transactions of the Royal Society, No. 224 (January 1696/7), pp. 384-9.

[66] 1 p.

[67]

in English

[68]

Published in Philosophical Transactions of the Royal Society, No. 270 (March/April 1701), pp. 824-9.

[69] 1 p.

[70]

in Latin

© 2020 The Newton Project

Professor Rob Iliffe
Director, AHRC Newton Papers Project

Scott Mandelbrote,
Fellow & Perne librarian, Peterhouse, Cambridge

Faculty of History, George Street, Oxford, OX1 2RL - newtonproject@history.ox.ac.uk

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