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he was desired to bring in a Description of these Engines in writing to be enterd in the Register booke. [Pardies
Letters & another of a dutch Iesuit in Brazile.] The Curator discoursd of a way of making a very Compendious
tablature of Musick which he was Desired to giue in Writing.
Dec. 21. 1671. Isaac Newton proposd by Bisp of Sarum.] The Curator brought in a written account of what
the Last Day he proposed, about the facilitating of Musicall Tablature, which being Read the Authour
was desired to Compleat it, and with all to bring in an example both of the Comon and of this New way
of tablature for the next meeting. [Sr. Malpighis anat of plants read (a sham about Dr. Goddard & myself)
The Experiment formerly produced by the Curator to shew what force would make make air & mercury passe
through wood, was called for but not Succeeding, it was ordered that it should be proposd for the next meeting.
Ian. 11. 1671/2. Isaac Newton Elected] mention was made of mr Newtons improuements Of telescopes by Contrac
ting them, and that that which himself had sent hither of tht kind to be examind, had been seen by the King, & considerd-
also by the president, Sr. R Moray, Sr. P Neile Dr Ch Wren & Mr Hooke at Whitehall and that they had soe good an opinion of it
as that they concluded that a Description & scheme of it should be sent by the Secretary in a Letter of Purpose to Mr Hugens
to Paris, therby to secure this contriuance to the authour who had also written a letter to Mr Oldenburgh from Cambridge
Ian 6. 1671 altering & inlarging the Descriptio of his Instrument which had been sent him from hence for his review
before it should goe abroad. this Description was read & ordered to be entered in the Register book together wth the Scheme
The Curator said that he did indeavour to make such a telescope and to find out a Metall not obnoxious to tarnishing
It was orderd that a Letter should be written by the Secretary to Mr Newton to signify to him his Electio. and also to thank him
for the comunication of this telescope and to assure him that the Society would take care that all right should be done him in
the Matter of this Invention.] vernons Letter about Picarts measure of the earth.
Mr Hooke was exhorted to pursue & finish his way of measuring a Degree: which he promised to doe hoping to bring
it to a greater Exactnesse & Neernesse [Cassinis Late Discouery of a new Planet neer Saturne] The scheme hereof
was deliuerd to Mr Hooke to consider it & thereupo to make the like obseruations -    The Curator was put
in minde of bringing in at the next meeting the Expt to shew what force is Requisite to make air & passe throw wood
Ian 18. Dr Tillotson Proposed Candidate by the Bp. of Salisbury] African Raritys] listers Lettr. of Veines in Plants.
Mr Newton's new telescope was Examined & applauded] Mr. Hooke made a proposition of a highly Considerable im
prouement of all sorts of Optick & Burning glasses which was this
The perfection of Telescopes, Microscopes, scotoscopes and Burning glasses from Lentes of Figures as easily and perfectly
made as plain or sphericall, by which the light and apparent magnitude of Bodys may be most prodigiously
and Regularly increased and whateuer almost has been Notion imagined or Desired in opticks may be -
performed with great facility & truth.     the way of Performing this he lodged in these characters.
a. c. f. e. i. l. n. o. p. r. s. t. u. x.} 4. 4. 3. 8. 4. 2. 2. 4. 2. 6. 4. 3. 4. 2 } He Receiud the thanks of the company, and was desired
to impart the thing it self to the president for his Lordsps. consideration, which he promised he would doe.
and the Proposition it self was ordered to be entred in the Register Booke. (lib: 4. fol. 121
Ian 25. Dr Tillotson was Elected. There was produced a reflecting telescope of 4 foot Long, after Mr Newto
way. which though the Metalline Concaue was not Duly polished, did yet pretty well, but was vndercharged.
It was orderd that it be perfected against the next Day. [mr Boyles opaque glasse for Reflecting telescopes]
newtons Letter about 1 a way of preparing a fit mettalline matter for Reflecting concaues. 2. about a considerable
philosophicall Discouery he intends to send to this Society to be considered of and Examined. Hierne about reuiuing animalls Drowned. Brown of Black stone form Island. Prince Ruperts way of melting and founding Black lead.
The President being desired to Declare to the Society whether he had considerd of Mr Hookes Late proposition
of bringing microscopes telescopes &c to perfection, said that he had not yet had time to examine it well
but by what he had seen he could not but haue a good opinion of it. This was seconded by Mr. Surueyor
Dr Wren who had also been made acquainted with it by the Inuentor. The Society urged the Presidt
and Mr Hooke that something might be vndertaken in this matter, that might convince the world of
the Reality thereof. Mr Hooke was put in minde of the expt. of forcing Mercury & air through wood.
Febru: 1. There was againe produced the 4 foot telescope of Mr Newtons way, which was now better then the last meeting.
It was recomended to the Curator, to see it perfected as far as it is capable to be. The same was put in mind to giue
as soon as he could a specimen of his great proposition of Making telescopes & microscopes & in Perfection -
vernons Letter about Picarts degree read. flamsteds letter of appulses of the to the pleiades.
Feb 8. D Wallis Letter about moon Apog & Perig. influencing the Baroscope. Sr. Cornelios fro Naples of the tarantula.
newton about his Discouery concerning light Refractio & colours. importing that light was not a similar
but heterogeneous thing consisting of Different Rayes which had essentially different Refractions abstracted fro
bodys they passe through. And that colours are produced from such and such Rayes whereof some on their own
nature are Disposed to produce Red others green, others purple, &c and that whitenesse is nothing else
but a mixture of all sorts of colours, or that it is produced by all sorts of colours blended together. (enterd in
the 4th. Reg. p. 138) the Bishp of Salisbury mr Boyle & Mr Hooke are desired to perue and consider it, and to
bring in a Report of it to the Society. [cox finds the Island black stone fitt for Reflecting telecopes] flamstead
Letter abt. obs. of satelitts] Hannemans Letter -
Feb: 15. Wallis obs of Great height of Baroscope at perigee. Mr. Hooke mentiond that by his Observation
that of Dr Wallis did not hold. he hauing often Remarked that the quicksiluer remained at almost one & the
same height for a long while and euen for 2 months together in Sommer. It was thought desireable that
this matter be further obserued with Care by those that haue Baroscopes. --- there were read Mr Hooks
Considerations vpon Mr. Newtons Letter about light & Colours. He was thanked for the paines taken in
bringing in such Ingenious Reflections, and it was ordered that this paper should be registred together wth tht
of Mr Newtons ^ V In the mean time that the printing of Mr Newtons paper X And that a coppy of it should
be with all speed transmitted to Mr Newton X by itself might goe on if he contradicted it not and
that the paper of Mr Hooke might be printed afterwards, it not being thought fit to print them together
Least Mr Newton should Look vpon it as a disrespect to printing soe suddain a Refutatio to a dis-
course of his which had met with soe much applause at the Society but a few days before. [Schroter
about Red glasse (Reg. 4. p. 125) Mr Hooke was put in mind of the 6 foot tube Mr Newtons way also of bringing
in a specimen of the effect of his own proposition.
Feb: 22. There was made by the Curator an Expt. to shew, that besides the flame & smoke of a candle there is a continuall
stream rising vp from it Distinct from the air, concerning which the curator said, that he conceiued that as the action
of the air vpon the Parts of the candle heated or the Dissolution of them was the flame, soe the Composition of the . . .
air and the relict of the effluuia of the parts of the candle dissolued thereby, did make this stream which continually ascended, and kept

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