332 Dr. Herschei/s Astronomical Observations 
plation of the stupendous construction of the heavens ; and 
what I have said may at least serve to throw some new light 
upon the organization of the celestial bodies. 
Synopsis of the Contents of this Paper. 
Diffused nebulosity exists in great abundance, - page 272 
Observations of more than one hundred and fifty square 
degrees of it, - - - - ”275 
Its abundance exceeds all imagination, - - 277 
Nebulous matter consists of substances that give out 
light, which may have many other properties, - 277 
Nebulous diffusions contain both milky nebulosity, and 
such as from its faint appearance may be mistaken 
for resolvable, - 278,281 
The range of its visibility is confined to very moderate 
limits, - - - 278, 279 
Much of it may be at distances where it cannot be seen, 280 
The purpose for which such great abundance of nebu- 
losity may exist, deserves investigation, - - 280 
Either greater depth or greater compression of the ne- 
bulous matter may occasion greater brightness, 282 
Condensation will best account for greater brightness, 284 
The condensation of the nebulous matter ascribed to gra- 
vitation, *» - - 284, 
When a nebula has more than one preponderating seat of 
attracting matter, it will probably in time be divided, 285 
