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John Wallis
Henry Oldenburg
Concerns the translation and printing of Uleg-Beg in Persian and Latin by Thomas Hyde (1636-1703), Keeper of the Bodleian Library, and that Wallis had transcribed the section about fixed stars; concerning the amalgamation of Horrox's papers Read to the Royal Society on 13 April 1664
06 April 1664 Sender: John Wallis Reference number: EL/W1/4
Concerns printing Persian and Latin copies of Uleg-Beg's catalogue of stars; requires original copies of Horrox's papers because transcripts are faulty; due to the interest shown in the star in Cetus, Wallis sends a copy of his letter to Hevelius (EL/W1/5) Read to the Royal Society on 4 May 1664
30 April 1664 Sender: John Wallis Reference number: EL/W1/6
Concerns music theory suggesting that the sounds we sing are different to musical scales; concerning the translation and publishing of Uleg Beg's catalogue of stars Read to the Royal Society on 18 May 1664
07 May 1664 Sender: John Wallis Reference number: EL/W1/7
Concerning revision to views about musical harmony and that this had been done by others anyway
25 May 1664 Sender: John Wallis Reference number: EL/W1/9
Concerns making a good transcription of Horrox's work with suggestions for further enquiries Read to the Royal Society on 28 September 1664
21 September 1664 Sender: John Wallis Reference number: EL/W1/10
Concerning observations of two comets Read to the Royal Society on 18 January 1664
24 December 1664 Sender: John Wallis Reference number: EL/W1/13
1665
Concerning a parcel of Horrox's papers; observations of the transit of Mercury Read to the Royal Society on 18 January 1665
01 January 1665 Sender: John Wallis Reference number: EL/W1/11
Gives thanks for a paper (possibly by Hevelius) about the comet; discusses the motion of the comet with detailed observations; discusses Horrox's theory about the motion of the comet
21 January 1665 Sender: John Wallis Reference number: EL/W1/14
Hypothesis about particles in motion (kinetic theory)
19 June 1665 Sender: John Wallis Reference number: EL/W1/15
1666
Concerning copies of Peter of Blois' work held at various libraries at Oxford; states that it is difficult to find a transcriber
03 April 1666 Sender: John Wallis Reference number: EL/W1/16
Concerns transcribing Peter of Blois' 'de Utilitate afflictionis'; details about other works which might be of interest
23 April 1666 Sender: John Wallis Reference number: EL/W1/17
Further thoughts on the ebbing and flowing of the sea
07 May 1666 Sender: John Wallis Reference number: EL/W1/19
Concerning the effects of a lightning strike upon two men who were rowing a boat on the river Thames at Medly, near Oxford; one was killed and Wallis gives observations of his post-mortem Read to the Royal Society on 16 May 1666
12 May 1666 Sender: John Wallis Reference number: EL/W1/20
Answering objections to his hypothesis about tides (see EL/W1/18 for paper) Read to the Royal Society on 23 May 1666 Oldenburg has summarised the objections against Wallis's theory about tides (inserted in front of EL/W1/21)
19 May 1666 Sender: John Wallis Reference number: EL/W1/21
Details of the copies of Peter of Blois' work which he has sent via Moors Coach
24 May 1666 Sender: John Wallis Reference number: EL/W1/22
Further discussion about tides No figure is attached Read to the Royal Society on 20 June 1666
02 June 1666 Sender: John Wallis Reference number: EL/W1/23
Discussing Isaac Vossius's work 'de motu marium et ventorum' with further thoughts on his own hypothesis about tides Read to the Royal Society on 20 June 1666
08 June 1666 Sender: John Wallis Reference number: EL/W1/24
Answers objections to his theory about tides
01 January 1666 Sender: John Wallis Reference number: EL/W1/25
Concerning the death of de Ruyter (this was a false rumour); discussing citations to be used in the publication of his hypothesis about tides with a new passage to be inserted
02 August 1666 Sender: John Wallis Reference number: EL/W1/26
Enquiry about the delivery of Hevelius's book; concerning barometric observations Read to the Royal Society on 15 August 1666
11 August 1666 Sender: John Wallis Reference number: EL/W1/27
Concerning delivery of books and journals; wishes that someone near the sea would take observations of the spring tides to see if his hypothesis works Read to the Royal Society on 22 August 1666
18 August 1666 Sender: John Wallis Reference number: EL/W1/28
1667
Concerning Hevelius's work 'Mantissa' about the comet; discussing the controversy between Hevelius and Auzout about the comet; discussing Powle's observations of high tides of the Severn river; concerns tracking down copies of Peter of Blois's work Read to the Royal Society on 23 June 1667
19 January 1667 Sender: John Wallis Reference number: EL/W1/29
Discussing Hevelius's observations of the comet; wishes for observations of high tides along the south and east coasts of Britain Read to the Royal Society on 6 February 1667
31 January 1667 Sender: John Wallis Reference number: EL/W1/30
Concerns sending books - one is by Hevelius and he discusses the controversy between Hevelius and Auzout
12 February 1667 Sender: John Wallis Reference number: EL/W1/31
Concerning the annual high tide before the vernal equinox and after the autumnal equinox; concerning William Neile's propositions of motion
21 March 1667 Sender: John Wallis Reference number: EL/W1/32
Transcribes and translates his letter, sent two years previously, which demonstrated the rule for finding the year in the Julian period Read to the Royal Society on 28 November 1667
16 November 1667 Sender: John Wallis Reference number: EL/W1/33
Demonstrates the method for finding the number of the Julian period
30 November 1667 Sender: John Wallis Reference number: EL/W1/34
Considering new properties of the circle which have not been fully understood, with figures and formulae
13 December 1667 Sender: John Wallis Reference number: EL/W1/35
Concerning the mathematical problem from France which should be understood in rational numbers; gives a list of scholars of Arabic; would like observations of the spring tides at the new moon
01 February 1667 Sender: John Wallis Reference number: EL/W1/36
1668
Sends his solution in rationals to the mathematical problem sent from France (see EL/W1/39); concerns delivery of books; concerning spring tides in London
08 February 1668 Sender: John Wallis Reference number: EL/W1/38
Gives a summary of Honore Fabri's 'Synopsis optica' which are usually discussed in optics, catoptrics and dioptrics
07 March 1668 Sender: John Wallis Reference number: EL/W1/40
Enclosed with EL/W1/42 Concerning annual high tides in several places in respect to his hypothesis published in 'Philosophical Transactions', vol 1, no 16 Read to the Royal Society on 2 April 1668
02 March 1668 Sender: John Wallis Reference number: EL/W1/41
Sends his paper on the annual high tides in several places in Latin (EL/W1/41) with revisions to be made to the English version of it (EL/W1/43)
17 March 1668 Sender: John Wallis Reference number: EL/W1/42
Concerning annual high tides in several places in respect to his hypothesis published in 'Philosophical Transactions', vol 1, no 16
07 March 1668 Sender: John Wallis Reference number: EL/W1/43
Concerning mistakes in Francis Dulaurens' 'Specimina Mathematica' in particular about a problem allegedly proposed by Wallis to the mathematicians of Europe to solve
30 March 1668 Sender: John Wallis Reference number: EL/W1/44
Concerning mistakes in Francis Dulaurens' 'Specimina Mathematica' in particular about a problem allegedly proposed by Wallis to the mathematicians of Europe to solve
30 March 1668 Sender: John Wallis Reference number: EL/W1/45
Encloses his animadversions on Dulaurens (see EL/W1/47)
02 July 1668 Sender: John Wallis Reference number: EL/W1/46
Enclosed with EL/W1/46 Further criticisms about Francis Dulaurens' work 'Specimina Mathematica' which he felt was libellous
02 July 1668 Sender: John Wallis Reference number: EL/W1/47
Concerning changes to his previous letter EL/W1/47
04 July 1668 Sender: John Wallis Reference number: EL/W1/48
Concerns delivery of letters; concerning John Wilkins' work 'Real character and philosophical language'
06 July 1668 Sender: John Wallis Reference number: EL/W1/49
Discussing Nicholas Mercator's 'Logarithmotechnia' Read at the Royal Society on 16 July 1668
08 July 1668 Sender: John Wallis Reference number: EL/W1/50
Revision to EL/W1/50 which would make the quadrature universal to all hyperbolae Note reads: 'Not to be ent'd [in the Letter Book]'
11 July 1668 Sender: John Wallis Reference number: EL/W1/51
Revision to his answer to Francis Dulaurens to be published in 'Philosophical Transactions' Note reads: 'Not to be ent'd [in the Letter Book]'
16 July 1668 Sender: John Wallis Reference number: EL/W1/53
Sends further criticisms about Francis Dulaurens (see EL/W1/55-57) Note reads: 'Not to be ent'd [in the Letter Book]'
20 July 1668 Sender: John Wallis Reference number: EL/W1/54
Satisfied with Borellus' experiments on the motion of projectiles; concerning Gregory's reply to Huygens about hyperbolic spaces and logarithms stating that it was first made by Gregory of St Vincent
03 August 1668 Sender: John Wallis Reference number: EL/W1/58
About letters concerning the hyperbola and about Dulaurens
25 August 1668 Sender: John Wallis Reference number: EL/W1/61
Account of a trumpet-shaped instrument to help Mr Watkins who was deaf Figure in text
03 September 1668 Sender: John Wallis Reference number: EL/W1/63
Discussing Lalovera's work but states that these ideas had been formulated in his own work 'de Cycloide' in 1659
06 October 1668 Sender: John Wallis Reference number: EL/W1/64
States that James Gregory's methodology about squaring the circle is flawed; concerning tides when there is a full moon; concerns his critique of Dulaurens
07 November 1668 Sender: John Wallis Reference number: EL/W1/66
Discussing James Gregory's demonstration that if the sector can be analytically compounded, then the circle can be analytically squared; states that both syllogisms are false
14 November 1668 Sender: John Wallis Reference number: EL/W1/68
Account about the general laws of motion
15 November 1668 Sender: John Wallis Reference number: EL/W1/69
Concerning books for the Library; concerning Huygens experiments of motion which, he states, had been carried out by Rook and Wren
19 November 1668 Sender: John Wallis Reference number: EL/W1/70
Discussing why the tides were higher than expected; asking for books to be sent to the public library; concerning James Gregory's error
26 November 1668 Sender: John Wallis Reference number: EL/W1/71
Paper critiquing the work of Francis Dulaurens Sent with EL/W1/74
27 November 1668 Sender: John Wallis Reference number: EL/W1/72
Discussing the geometry of Thomas Hobbes Sent with EL/W1/74
27 November 1668 Sender: John Wallis Reference number: EL/W1/73
Encloses two papers with his thoughts about his two 'antagonists', Francis Dulaurens and Thomas Hobbes (see EL/W1/72 and EL/W1/73); concerning delivery of books
30 November 1668 Sender: John Wallis Reference number: EL/W1/74
Discussing resistance to motion, about springiness, about 'whether different motions destroy each other' Read to the Royal Society on 10 December 1668
03 December 1668 Sender: John Wallis Reference number: EL/W1/75
Answering queries concerning the springiness of bodies, whether quiescent matter has resistance to motion, whether motion can pass from one body to another, about compound motion; states that he has not seen Thomas Hobbes' new book Read to the Royal Society on 10 December 1668
05 December 1668 Sender: John Wallis Reference number: EL/W1/76
Encloses a letter (EL/W1/77) and asks Oldenburg to send it to Hevelius Further complaints about 'Historia Coelestis' Postscript written on 10 December about the physical cause of motion; concerning enquiries sent from overseas for Wallis to answer
09 December 1668 Sender: John Wallis Reference number: EL/W1/78
States that he cannot solve a problem sent by Wassenaer (mentioned in EL/W1/78); concerning corrections to 'Historia Coelestis'; explanation about whether motion can be lost
21 December 1668 Sender: John Wallis Reference number: EL/W1/79
Discussing motion and restitution with an explanation of compound motion
31 December 1668 Sender: John Wallis Reference number: EL/W1/80
1669
Concerning motion - springiness and gravity
02 January 1669 Sender: John Wallis Reference number: EL/W1/81
Concerns letters from James Gregory; some thoughts on Huygens' propositions of motion
12 January 1669 Sender: John Wallis Reference number: EL/W1/82
Concerning appointment of Erasmus Bartholin to correct errors in 'Historia Coelestis'; suggests changes to the end of his response to Dulaurens, if the letter has not been published; concerning papers relating to accelerated and decelerated motion for Hevelius
19 January 1669 Sender: John Wallis Reference number: EL/W1/83
Concerning a letter by Huygens which is in code - guesses that it is about the 'method for turning a hyperbolical solid by ordinary instruments' - and suggests letters for the code; concerning corrections to 'Philosophical Transactions'
11 February 1669 Sender: John Wallis Reference number: EL/W1/84
States that he has not seen Childrey's 'Britannia Baconica' but to pass on his theory that tides will be high at the moon's apogee and perigee (moon's orbit is furthest from the earth or nearest the earth); concerning the appointment of an 'anatomical operator'
15 April 1669 Sender: John Wallis Reference number: EL/W1/85
Concerning Hevelius's wish to publish Horrox's observations; discourages meddling in experimental philosophy
24 April 1669 Sender: John Wallis Reference number: EL/W1/86
Discussing William Neile's hypothesis about accelerated and decelerated motion
10 May 1669 Sender: John Wallis Reference number: EL/W1/87
Further discussion of William Neile's proposition of motion and that his assumption still remains unproven
17 May 1669 Sender: John Wallis Reference number: EL/W1/88
States that William Neile's proposition of motion still remains unproven and outlines flaws in it
29 May 1669 Sender: John Wallis Reference number: EL/W1/89
Discussing William Neile's principle regarding the decrease in motion from his paper of 1 June
07 June 1669 Sender: John Wallis Reference number: EL/W1/90
Discussing accelerating and decelerating motion
15 June 1669 Sender: John Wallis Reference number: EL/W1/91
Concerning the opening of Sheldonian Theatre in Oxford
16 July 1669 Sender: John Wallis Reference number: EL/W1/92
States that he has not had time to consider Huygens' optical problem; outlines the errors in William Neile's proposition of motion, namely that he makes equal causes to produce unequal effects
29 July 1669 Sender: John Wallis Reference number: EL/W1/93
Concerning force of motion; concerning a satirical play by the 'terrae filius' (possibly relating to EL/W1/92 and the Sheldonian Theatre)
15 August 1669 Sender: John Wallis Reference number: EL/W1/94
Sends a summary of the letter sent to Renatus Slusius concerning Christopher Wren's hyperbolic cylindroid (made upon a lathe with a straight-edged steel tool), and then how this method could make a hyperbola using an involved calculation; Wallis quotes from his treatise 'De cycloide' about how this can be done Figure in text
16 October 1669 Sender: John Wallis Reference number: EL/W1/96
States that he did not intend to slur Wren's work in his letter to Slusius (EL/W1/95) and tells Oldenburg to remove anything that might be offensive and suggests some changes; states that he would rather the letter was not published
17 October 1669 Sender: John Wallis Reference number: EL/W1/97
Wallis returns Oldenburg's letter with corrections to his account about 'Mechanica'
09 December 1669 Sender: John Wallis Reference number: EL/W1/98
Concerning delivery of parcels, papers and books
09 January 1669 Sender: John Wallis Reference number: EL/W1/100
1670
Account of barometric observations using his 'baroscope' and of thermometric observations from 1664-1669 using his 'thermoscope' or 'sealed weather-glass'
07 January 1670 Sender: John Wallis Reference number: EL/W1/99
Discussing Roberval's paper about a new balance Figures have been inserted in the Letter Book 3, p 355
10 March 1670 Sender: John Wallis Reference number: EL/W1/103
Concerning Joseph Childrey's criticisms (published in 'Philosophical Transactions', vol 5, no 64, p 2061) of Wallis's theory about tides Read to the Royal Society on 24 March 1669
19 March 1670 Sender: John Wallis Reference number: EL/W1/104
Sends Henry Hyrne's letter (EL/H1/107) and his reply to it (EL/W1/102); considers publication of his letters on the topic of tides On the reverse is a copy of Oldenburg's reply
24 March 1670 Sender: John Wallis Reference number: EL/W1/105
Concerning delivery of his reply to Joseph Childrey's letter; states that Hyrne's objections to his theory on tides were mistakes; encloses reply to Slusius (EL/W1/106)
29 March 1670 Sender: John Wallis Reference number: EL/W1/107
States that Hyrne has sent another packet (EL/H1/108) concerning his theory about tides
09 April 1670 Sender: John Wallis Reference number: EL/W1/109
Concerning the Count of Schawmburg's visit to Oxford
22 July 1670 Sender: John Wallis Reference number: EL/W1/111
Encloses a letter from Renatus Slusius; concerns additions to be made to books being sent (possibly referring to 'Mechanica'); concerning the sale and printing of the book
04 August 1670 Sender: John Wallis Reference number: EL/W1/112
Concerning Mr Awbrey's enquiries about antiquities at Carnutes (inhabitants of the region of Chartres); concerning Thomas Piers sending a piece of plate to Mr Stubbs
28 October 1670 Sender: John Wallis Reference number: EL/W1/113
Concerns answering problems from Awbrey and Huygens; discusses publication of Childrey's letter with his reply
03 November 1670 Sender: John Wallis Reference number: EL/W1/114
Concerning the controversy between Honore Fabri and Borelli about whether or not two separate motions can be compounded into one, without modifying the other (a stone shot horizontally and the other descending perpendicularly) Read to the Royal Society on 24 November 1670
15 November 1670 Sender: John Wallis Reference number: EL/W1/115
Concerning Huygens' paper on motion of bodies; quotes the beginning of his paper about the motion of bodies; concerning the work of Honore Fabri
24 November 1670 Sender: John Wallis Reference number: EL/W1/116
1671
Concerning a copy of a letter for Heinrich Coccejus, nephew of Oldenburg, who was to take it to Francis Vernon
23 March 1671 Sender: John Wallis Reference number: EL/W1/118
Critique of Leibniz's new hypothesis on motion, which includes discussion of salivary ducts and lymphatic system Read to the Royal Society on 20 April 1671
07 April 1671 Sender: John Wallis Reference number: EL/W1/119
Concerning the nature of gravitation; concerning the experiment with an air-pump which was carried out by Huygens in 1661 Read to the Royal Society on 18 May 1671
13 May 1671 Sender: John Wallis Reference number: EL/W1/120
Discussing Leibniz's abstract of the theory of motion
02 June 1671 Sender: John Wallis Reference number: EL/W1/121
Thanks Oldenburg for his offer of kindness to be made towards his son; encloses a paper about an experiment (not specified) which was carried out at the Royal Society Note reads: 'Not to be ent'd [in the Letter Book]'
10 June 1671 Sender: John Wallis Reference number: EL/W1/122
Consideration of Thomas Hobbes's 'Rosetum geometricum...'
27 June 1671 Sender: John Wallis Reference number: EL/W1/123
Comments on Thomas Hobbes's 'English paper' on geometry (see EL/W1/124a)
04 August 1671 Sender: John Wallis Reference number: EL/W1/124
Insertions for Wallis's replies to Thomas Hobbes in relation to 'Rosetum geometricum...'
10 August 1671 Sender: John Wallis Reference number: EL/W1/126
Provides insertions for clarity to letter EL/W1/126 which concerned his views about Thomas Hobbes's work on geometry
13 August 1671 Sender: John Wallis Reference number: EL/W1/128
Concerning a paper from Thomas Hobbes where 'hee pretends to confute a theorem which, hee says, hath long time passed for a Truth'. Theorem and Wallis's answer given.
16 August 1671 Sender: John Wallis Reference number: EL/W1/129
Concerning Thomas Hobbes's paper on geometry (EL/W1/130 for Wallis's reply)
15 August 1671 Sender: Henry Oldenburg Reference number: EL/W1/130
Concerning payments to be made; concerning Leibniz stating that motion is the cohesive principle
06 November 1671 Sender: John Wallis Reference number: EL/W1/131
Concerns sending a paper about coffee and tea; concerning Abulfeda, an Arabian historian and geographer
23 November 1671 Sender: John Wallis Reference number: EL/W1/132
States that he has received Pocock's paper in Arabic and English; further thoughts about letter to Leibniz about motion is the cohesive principle and provides some further lines which can be added (in Latin); concerning books for the Bishop of Oxford
27 November 1671 Sender: John Wallis Reference number: EL/W1/133
1672
Contains barometric observations; views about Isaac Newton's reflecting telescope and Samuel Moreland's loud-speaking trumpet
14 January 1672 Sender: John Wallis Reference number: EL/W1/135
Account of the work of Ignatius Pardies which is divided into six treatises concerning the theory of motion, statics, accelerated and decelerated motion, descent of fluids, vibrations of pendulums, theory of waves
18 January 1672 Sender: John Wallis Reference number: EL/W1/136
Concerning delivery of letters; giving some barometric observations
10 January 1672 Sender: John Wallis Reference number: EL/W1/137
Discussing the suspension of quicksilver, purged from air, which was higher than the ordinary standard in theTorricellian experiments
26 September 1672 Sender: John Wallis Reference number: EL/W1/140
Expanding letter EL/W1/140 which discussed the suspension of quicksilver, purged from air, which was higher than the ordinary standard in theTorricellian experiments Figure attached
01 January 1672 Sender: John Wallis Reference number: EL/W1/141
Discussing his reply to Huygens' letter dated 27 September 1672 about methods for finding tangents which he had used in his work on conic sections of 1656
02 October 1672 Sender: John Wallis Reference number: EL/W1/142
Concerning the high suspsension of mercury; discussion about air
05 October 1672 Sender: John Wallis Reference number: EL/W2/1
Discussing experiments with mercury to determine the reason for its high position Read to the Royal Society on 6 November 1672
25 October 1672 Sender: John Wallis Reference number: EL/W2/2
Pleased that Oldenburg is carrying out experiments to determine the high position of mercury; corrections for published article in 'Philosophical Transactions'
14 November 1672 Sender: John Wallis Reference number: EL/W2/3
Concerning delivery of post; concerning Thomas Hobbes - not knowing what he has learned from him On reverse is a copy of Oldenburg's letter to Hobbes dated 30 December 1672 concerning the controversy between Wallis and Hobbes stating that the Royal Society was not going to get involved
26 December 1672 Sender: John Wallis Reference number: EL/W2/4
1673
Concerning Martin Lister's discourse about veins in plants; about freezing rain in Somerset; Slusius's method of drawing tangents to all geometric curves
17 February 1673 Sender: John Wallis Reference number: EL/W2/5
Concerning transcriptions of the book 'Vettius Valens' Note reads: 'Not to be ent'd [in the Letter Book]'
01 March 1673 Sender: John Wallis Reference number: EL/W2/6
Concerns delivery of journals and book; points out errors in 'Philosophical Transactions'
09 March 1673 Sender: John Wallis Reference number: EL/W2/7
Provides an additional comment to the letter sent to Huygens of 30 May 1673 (EL/W2/8) concerning William Neile's theory for making a straight line equal to a paraboloid
23 June 1673 Sender: John Wallis Reference number: EL/W2/9
Sends corrections to be made to 'Philosophical Transactions'; concerning Pocock's work which describes an imperfect cycloid
15 July 1673 Sender: John Wallis Reference number: EL/W2/10
Discussing the flux and reflux of the sea in answer to Jessop's objections; concerning Pocock and the reading of Arabic or Persian manuscripts about botany and medicine Figures in text
02 September 1673 Sender: John Wallis Reference number: EL/W2/11
Concerning the centrobaric rule of Gulden and Wallis provides extracts from his 'Arithmetica infinitorum' on the topic of rotating parallelogram; discussing his treatise on the cycloid Figures in text
20 September 1673 Sender: John Wallis Reference number: EL/W2/12
Concerning bills for books and encloses a receipt (no longer attached); concerning delivery of other books; further thoughts about tides reflecting on Jessop's letter
25 September 1673 Sender: John Wallis Reference number: EL/W2/13
Concerning authorship of the theory of a straight line is equal to a cycloid - Wallis defends William Neile, whilst Huygens supports Johannes Heuraet
04 October 1673 Sender: John Wallis Reference number: EL/W2/14
Delivery of letters and journals; corrections for 'Philosophical Transactions'; reiterates his rules for rotating a solid
20 December 1673 Sender: John Wallis Reference number: EL/W2/15
1674
Answer to Jessop about making a straight line equal to a curved one; outlines two ways to make a curve and about rolling a circle on a line; discussing Jessop's objections to his theory about tides
14 February 1674 Sender: John Wallis Reference number: EL/W2/18
Discussing Huygens' 'pars quarta, De Centro Oscillations'; Wallis would like his paper returned to him so that he can make alterations because Frenicle is going to publish on a similar subject
20 March 1674 Sender: John Wallis Reference number: EL/W2/19
Further discussion of Jessop's objections to Wallis's theory on tides
24 March 1674 Sender: John Wallis Reference number: EL/W2/20
Concerning corrections to his papers Note reads: 'Not to be ent'd [in the Letter Book]'
31 March 1674 Sender: John Wallis Reference number: EL/W2/21
Concerns publishing papers about the theory of tides; discussing Robert Hooke's observations of the annual parallax of the earth's orb; concerning the Rosenstein brothers, and the case of one of them hanging himself
07 April 1674 Sender: John Wallis Reference number: EL/W2/22
Concerns sending his reprinted work on English grammar to Huygens; discussing Matthew Hale's 'Observations touching the Toricellian experiment...'
22 June 1674 Sender: John Wallis Reference number: EL/W2/23
Arranging a meeting so that Wallis could read his paper on gravity; states that the projection of shooting is not a parabola
15 October 1674 Sender: John Wallis Reference number: EL/W2/25
1675
Concerning the publication of his paper on gravity; discussing Robert Hooke's and Johannes Hevelius's thoughts about each other's work; concerning errors in 'Arithmetica Infinitorum'
11 January 1675 Sender: John Wallis Reference number: EL/W2/27
Concerning publication of paper; discussing the methodology used in 'Arithmetica Infinitorum'
11 February 1675 Sender: John Wallis Reference number: EL/W2/28
Discussing the topic of equal and opposite forces eg the balance of tight-rope walkers, immense weight suspended by a thin wire; discussing Cardan's prediction of transfusing blood from one animal to another; concerning Slusius's letter about descending liquid in an inverted tube
01 November 1675 Sender: John Wallis Reference number: EL/W2/29
Thanks for sending copies of 'Philosophical Transactions' and sending his replies to Slusius about descent of liquids
01 November 1675 Sender: John Wallis Reference number: EL/W2/29a
1676
Concerning enquiries from Boulliaud about Jewish textual interpretation for a commentary on the New Testament; Wallis had consulted Mr Pocock on these enquiries
27 May 1676 Sender: John Wallis Reference number: EL/W2/30
Concerning specimens of 'Acta sanctorum', but says there are lots of volumes of saints' lives
22 August 1676 Sender: John Wallis Reference number: EL/W2/32
Tells a moral tale; discussing mechanics, a fulcrum and balance
24 October 1676 Sender: John Wallis Reference number: EL/W2/33
Discussing the book of Fabri's dialogues against Borelli on the topic of projectiles
12 December 1676 Sender: John Wallis Reference number: EL/W2/34
1677
Concerning the publication of Cyprian by Dr Fell; account of the meteor witnessed in the skies over several different places in England Read to the Royal Society on 15 February 1676
30 January 1677 Sender: John Wallis Reference number: EL/W2/35
Concerning the sympathetic vibrations and nodes of several parts of a string on a stringed instrument (with diagrams)
14 March 1677 Sender: John Wallis Reference number: EL/W2/36
Further remarks on sympathetic vibrations of stringed instruments mentioned in EL/W2/36
29 March 1677 Sender: John Wallis Reference number: EL/W2/37
Further details about the meteor seen in January 1677 (EL/W2/35) and about a comet seen in April of the same year Read to the Royal Society on 17 May 1677
08 May 1677 Sender: John Wallis Reference number: EL/W2/38