464 Sir W. Herschei/s astronomical observations 
place the numerous observations of ambiguous objects that 
in my sweeps of the heavens were seen by the 20 feet 
telescope ; and having already compared the different forms 
under which clusters of stars appeared in the finders of the 
instruments, I shall now also notice how they were seen in 
the gradually larger telescopes. 
In the 2 feet Newtonian - sweeper, 
No. 92 of the connoissance appeared like a clouded star, 
with a magnifying power of 15. No. 2, with a power of 24, 
appeared like a telescopic comet. 
In the 7 feet telescope, 
No. 77 was like an ill defined star, surrounded by nebu- 
losity. No 79, with a power of 57, appeared nebulous. 
With 460 No. 3 could hardly be seen, for want of light. 
No. 10, with 227, could not be resolved into stars, for want of 
power. With 460 No. 22 wanted light, and with 227 it 
wanted power. With a magnifier of 171 No. 33 had a 
nebulous appearance. No. 1 was seen as light without stars. 
In the 10 feet telescope. 
The light of No. 19 appeared mottled. With a power of 
71 No. 30 appeared like a pretty large cometic nebula, very 
gradually much brighter in the middle. With the same 
power No. 75, was small and cometic. No. 77 had nearly 
the appearance of a large stellar nebula. 
