HerscheW s Telescope . 
239 
the rooms may be placed things, commonly used in Ob- 
servatories. 
From a view of the plate and a description thus given 
of it, our readers, we presume, will form a competent 
idea of an instrument, which, with proper eye-glasses, 
magnifies above six thousand times, and is the largest 
diat has ever been made. Astronomers in different 
parts of the world may be discouraged from continuing 
their observations, when it should seem, that their dis- 
coveries must be anticipated by Her sc hell ; but 
though he has so much the advantage, much is left to 
their labour and industry. It did not require a telescope 
of this magnitude to observe the object which was first 
discovered to be a planet by this Astronomer, for it had 
been seen and taken for a fixed star by many persons in 
the two last centuries. And the double ring of Saturn, 
which has, indeed, been so beautifully observed through 
Hersc hell’s magnifier, had been already described by 
Cassini in his Memoirs. Such of our readers as wish 
for a more accurate account of this instrument, will find 
it in the Transactions of the Royal Society for 1795, 
second part ; in which there are eighteen plates and 
sixty-three pages of letter-press, to give an atriple detail 
of every circumstance relating to joiners’ work, carpen- 
ters’ work, smiths’ work, &c. which has attended the 
formation and erection of this instrument. It was com- 
pleted on August 28th, 1789, on which day the sixth 
satellite of Saturn was discovered. 
