Editorial note — Galileo-Galilei, the Florentine Astronomer. 1564-1642.
Reading edition
[Footnote 126: The largest telescopes we now have are at Cincinnati, 204 focal feet: Greenwich, (England,) 210; Cambridge, (Mass.,) 270; Pultowa, (Russia,) 289; E. Cooper, (private observatory, Ireland,) 302. Auzont (Paris) is said to have made one of 600 focal feet, but it was found to be unmanageable.]