The celestial worlds discover'd

THE Celeſtial Worlds DISCOVER’D:
OR, CONJECTURES Concerning the INHABITANTS, Plants and Productions OF THE Worlds in the Planets.
Written in Latin by CHRISTIANUS HUYGENS , And inſcrib’d to his Brother CONSTANTINE HUYGENS Late Secretary to his Majeſty King William .
The Second Edition, Corrected and Enlarged. LONDON : Printed for James Knapton, at the Crown in St. Paul ’s Church-Yard. Mdccxxii.
Concerning this Edition I can ſay, that I have taken care to have the Cutts exactly done, and have placed each Figure at the Page of the Book that refers to it, which I take to be more convenient to the Reader than putting them all at the End.
I have been careful to procure the beſt Paper, that I might in ſome meaſure come up to the Beauty of the Latin Edition, though this bear but half the Price of it.
Written by Christianus Huygens, and inſcribed to his Brother Constantine Huygens.
Fig. 1 SYSTEMA COPERNICI.
p. 11.
Fig. 2.
p. 15.
In this proportion of the Planets it is worth while to take notice of the prodigious Magnitude of the Sun in compariſon with the four innermoſt, which are far leſs than Jupiter and Saturn . And ’tis remarkable, that the Bodies of the Planets do not increaſe together with their Diſtances from the Sun, but that Venus is much bigger than Mars .