^6 2 Sir W. FRrschel’s astronomical observations 
This seems to throw some light upon a species of objects 
called stellar nebulae, one hundred and forty of which have 
been inserted in my catalogues. For as it has just been 
mentioned that a 10 feet telescope may become a finder to a 
20 feet one, the 20 feet telescope itself will be but a finder to 
objects that are so far out of its reach as not to appear 
otherwise than ambiguous ; nay, the 40 feet telescope, when 
it is but just powerful enough to show the existence of an 
object which decidedly differs from the appearance of a star, 
may then truly be called a finder. 
V. The milky way , at the profundity beyond which the gaging 
powers of our instruments cannot reach, is not an ambiguous 
object. 
Celestial objects can only be said to remain ambiguous, 
when the telescopes that have been directed to them leave it 
undetermined whether they are composed of stars or of 
nebulous matter. Six observations of different parts of the 
milky way, relating to this subject, have already been given 
in my last paper,* to which the following four may be 
added. 
Dec. 27, 1786. Right ascension 6 h 42'. Polar distance 88° 
33'. There are 116 stars in the field of view, besides many 
too small for the gage. 
Sept. 21, 1788. Right ascension 2i h 29'. Polar distance 
41 0 1 '. There are about 360 stars in the field of view, but 
most of them are so small that it requires the utmost attention 
to see them. 
Sept. 27, 1788. Right ascension 2i h 17'. Polar distance 
® See Phil. Trans, for 1817, pages 325, 326, and 329. 
