mes Mr. Herscuer’s Obfervations on 
of making a valuable addition to the clufters of ftars and ne=_ 
bulze already collected and given us in the work before referred 
to, which .amount.to 103. ‘The: eve nt has plainly. proved 
that my expectations were well founded : for I have already 
found 466 new nebule and clufters of {tars,.none of which, 
to my prefent knowledge, have been feen before by any perfon 3 
moit of them, indeed, are not within the reach of the belt | 
cominon telefcopes now in ufe. In all probability many more 
are ftill in referve; and as I am purfuing this track, I fhall_ 
make them up into feparate catalogues, of about two or three. 
hundred at a time, and have the honour of prefenting them i i. 
that form to the Royal Society. 
A very remarkable circumftance attending the nebulz and 
clufters of ftars is, that they are arranged into ftrata, which 
feem to runon to a great length ; and fome of them I have 
already been able to purfue, fo as to guefs pretty well at their 
form and direction. It is probable enough, that they may fur- 
round the whole apparent fphere of the heavens, not unlike 
the milky way, which undoubtedly is nothing but a ftratum of 
fixed ftars. And as this latter immenfe ftarry bed is not of — 
equal breadth or luftre in every part, nor runs on in one ftraight 
direction, but is curved and even divided into two ftreams 
along a very confiderable portion of it ; we may likewife expect 
the greateft variety in the ftrata of the clufters of ftars and ne- 
bulz. One of thefe nebulous beds is fo rich, that, in paffing 
through a fection of it, in the time of only 36 minutes, T- 
detected no lefs than 31 nebula, all diftin@ly vifible upon a— | 
fine blue fky. Their fituation and fhape, as well as condition, — 
feems to denote the greateft variety imaginable. In another 
ftratum, or perhaps a different branch of the former, I have . 
feen double and treble nebulz, varioufly arranged; large ones” 
with 
