Letter to Henry Oldenburg, 16 March 1671

<35r>

Cambridg March {illeg}|16|^th 1671.

S^r

The book w^ch my Carrier by forgetfulnesse disappointed me of the last week I have now received & thank you for it. With the Telescope w^ch I made I have sometimes seen remote objects & particularly the Moon very distinct in those pts of it w^ch were neare the sides of the visible angle. And at other times when it hath been otherwise put together it hath exhibited things not w^thout some confusion. W^ch difference I attributed chiefely to some imperfection that might possibly be either in the figures of y^e metalls or eye glasse, & once I found it caused by a little tarnishing of the Metall in 4 or 5 days of moist weather.

One of the Fellows of o^r College is making such such another Telescope w^th w^ch last night I looked on Jup{illeg}|i|ter & he seemed as distinct & sharply defined as I have seen him in other Telescopes. When he hath finished it I will examin more strictly & send you an account of its f{illeg} performances, For it seemes to be somthing better then that w^ch I made.

Yo^r humble servant

I. Newton

<35v>

These

To Henry Oldenburg Es
at his house about the middle
of the old Pall-mail in
Westminster.

London

2

< insertion from lower down f 35v >

Rec. March 18. 71.

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