Even this, however, is to be surpassed by the lens which Mr.Clark has in hand for the Lick Observatory (California), which is to have a clear aperture of three feet in diameter.
[11] Since the above passage was written and in type, I have seen (in September 1884) the reflecting telescope referred to at pp.

357-8.

It was mounted on its cast-iron equatorial stand, and at work in the field adjoining the village green at Bainbridge, Yorkshire.

The mirror of the telescope is 8 inches in diameter; its focal length, 5 feet; and the tube in which it is mounted, about 6 feet long.

The instrument seemed to me to have an excellent defining power.
But Mr.Lancaster, like every eager astronomer, is anxious for further improvements.