330 Sir William Herschel’s observations and experiments 
considerably rich. Right ascension o h 27'. Polar distance 
30° 5'. Clustering small stars. 
These observations belong to a place preceding the back 
of Cassiopea’s chair. 
Dec. 27, 1786. Right ascension 6 h 3 6'. Polar distance 
88° 5'. Clustering stars of the milky way, almost close 
enough, and so far separated from the rest of the stars as to 
be called a cluster, but still evidently joining to them. 
This observation of the clustering of the stars of the milky 
way relates to a place that precedes the breast of Monoceros. 
X. Concluding Remarks. 
What has been said of the extent and condition of the 
milky w r ay in several of my papers on the construction of the 
heavens, with the addition of the observations contained in 
this attempt to give a more correct idea of its profundity in 
space, will nearly contain all the general knowledge we can 
ever have of this magnificent collection of stars. To enter 
upon the subject of the contents of the heavens in the two 
comparatively vacant spaces on each side adjoining the milky 
way, the situation of globular clusters of planetary nebulae, 
and of far extended nebulosities, would greatly exceed the 
compass of this Paper ; I shall therefore only add one re- 
markable conclusion that may be drawn from the experi- 
ments which have been made with the gaging powers. 
In fig. 2, Plate XV. let a circle, drawn with the radius of 
the 12th order of distances, represent a sphere containing 
every star that can be seen by the naked eye ; then, if the 
breadth of the milky way were only 5 degrees, and if its 
profundity did not exceed the goodth order of distances, the 
