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in English
Oxford, Apr. 10. 1695.
Sir
I was in hopes of seeing you in Oxford last Summer
which made me neglect sending you (
which belonged to the Volume you had before. They were
not wrought off at the Rolling-Press when you had the
rest; but are easy to be inserted in their proper places.
I send them now, with the other
I understand (
about Light, Refraction, & Colours: which I should be glad
to see abroad. 'Tis pitty it was not out long since. If it be in
English (as I hear it is) let it, however, come out as it is; and
let those who desire to read it learn English. I wish
you would also print the two large Letters of June & August
1676. I had intimation from Holland, as I desired there by your
friends, that somewhat of that kind were done; because your
notions (of Fluxions) pass there with great applause, by the
name of Leibnitz's Differentialis. I had this intimation
when all but (part of) the Preface to this volume was printed-off;
so that I could onely insert (while the Press stayd) that short inti
mation thereof which you there find. You are not so kind to your
Reputation (& that of the Nation)
things of worth ly by you so long, till others carry away the Repu
tation that is due to you. I have endeavoured to do you justice in
that Point; and am now sorry that I did not print those two letters Verbatim. I understand you are now about adjusting the Moon's Motions
and, amonst the rest, take notice of that of the co
Gravity of the Earth & Moon as a conjunct body: (a notion which
I think was first started by me in my Discourse of the Flux and Reflux
of the Sea.) And it must be needs be of a like consideration in that of Iupiter
with his Satellites, & of Saturn with his. (And I wonder we have not yet
heard of any about Mars.) But Saturn & Iupiter being so far off, the
Effects thereof are less observable by us than that of the Moon. My advise
upon the whole, is, that you would not be too slow in publishing what you do.
I am
S.r
your very humble Servant
John Wallis
Superscribd thus viz.t
For Mr Isaac Newton
Fellow of Trinity College, &
Professor of Mathematicks
in Cambridge,
with a Book.