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But as my Incapacity of accepting the Favour of those noble Mecenates,

bath been the Occasion of that excellent Glass being put into better Hands; so I assure myself their Expectations are abundantly answered, by the Number and Goodness of the Observations that bave been, and will be made therewith.

THE

Why most favoured by the Author. 42 Fixt Stars are Suns.

43 The Author's Opinion about the Whiteness of the Galaxy

ibid. The Author suspects there are more

New Stars than ever yet have been taken notice of.

44 His Observations of them. 46 How to be observed.

ibid. The Planets are Worlds.

47 Mr. Huygens denies Seas being in the Moon.

48 The Author's Proof and Observations of them.

52 What Creatures inhabit the Planets.

56

A Pre

A

Preliminary Discourse

CONCERNING

The Systems of the Heavens,

the Habitability of the Planets, and a Plurality of Worlds, useful for the reading of the following Book.

M

Y Phyfico-Theology having

met with so quick a Sale as to come to a third Im

presfion before the Year was expired, but especially the Solicitations of many Learned Men,

both known and unknown, have given me great encouragement to fulfil my promise, in sending abroad this other Part, relating to the Heavens: which should sooner have seen the light, but that I was minded not to interrupt the Reader's patience with many Notes (which I could not well avoid in my Physico-Theology, and which my Rough Draught of this was burthened with) and therefore I threw the greatest Part of them into the Text: which necessitated me to transcribe the whole. And when my Hand was in, I new-made some part of it, and added many new Observations of my own,

which I then had lately made with some very good long Glasses I had in my hands; one of Campani's grinding; and others of English work, which exceeded it; but especially one of Mr. Huygens's of above 120 Feet, which few. for goodness do surpass.

Of

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