a8i 
relating to the Construction of the Heavens. 
44 form of a parallelogram with a short ray from the preced- 
44 ing corner towards the south. The nebulosity is nearly of 
<£ an equal brightness throughout the parallelogram, which is 
ec about 8' long and 5 or 6 ' broad, but ill defined. ” See fig. 3, 
a, b } c. 
5. Oj milky Nebulce. 
When detached nebulosities are small we are used to call 
them nebulae, and it is already known from my catalogues 
that their number is very great. It will therefore be sufficient 
to refer only to a few, of which the nebulosity is of the milky 
kind.* 
No. 9 in the 5th class is “ A large, extended, broad, faint 
“ nebula; its nebulosity, like that of the preceding one (which 
is De la Caille’s last but one in the Catalogue des Nebu- 
ci leuses du Ciel Austral J p) is of the milky kind/' 
The only purpose for which the nebulae of these two classes 
have been placed in this connection, is to show that large de- 
tached nebulosities, whatever may be their appearance, as well 
as those nebulae expressly called milky, partake of the general 
nature of the diffused nebulous matter, pointed out in the 
preceding articles. 
6 . Of milky Nebulce with Condensation. 
In looking at the beautiful nebula in Orion ; to which I 
refer, because every common good telescope will shew it suf- 
ficiently well for the present purpose ; we perceive that it is 
not equally bright in all its parts, but that its light is more 
* See I. 204, III. 1, 1 16. IV. 7, 20, 30. V. 9, 25. 
f See Connoissance des Temps for 1784, page 272. 
MDCCCXI. O O 
