relating to the Construction of the Heavens. 273 
itself already on the knowledge of astronomers, as will be 
seen in my third article. 
The widely diffused nebulosity under consideration has 
already been partially mentioned in my catalogues.* 
The description of the object I shall select is of No. 14 in 
the 5th class, and is as follows : 44 Extremely faint branching 
44 nebulosity ; its whitishness is entirely of the milky kind, and 
44 it is brighter in three or four places than in the rest ; the 
44 stars of the milky way are scattered over it in the same 
45 manner as over the rest of the heavens. Its extent in the 
44 parallel is nearly i|- degree, and in the meridional direction 
44 about 52 minutes. The following part of it is divided into 
44 several streams and windings, which after separating, meet 
44 each other again towards the south.” See figure 1. 
This account, which agrees with what will be found in all 
the other numbers referred to, with regard to the subject 
under consideration, namely, a diffused milky nebulosity, will 
give us already some idea of its great abundance in the hea- 
vens ; my next article however will far extend our conception 
of its quantity. 
2. Observations of Nebulosities that have not been published before . 
It may be easily supposed that in my sweeps of the heavens 
I was not inattentive to extensive diffusions of nebulosity, 
which occasionally fell under my observation. They can only 
be seen when the air is perfectly clear, and when the observer 
* See Phil. Trans, for 1786, page 471; for 1789, page 226 ; and for 1802, page 
503. The following ten nebulosities are in the Vth class. No. 13, 14, 15, 17, 28, 30, 
3 *> 33 > 34 » 3 8 - 
MDCCCXI. 
N n 
