the Conftruétion of the Heavens. At 
thofe moft excellent French aftronomers, Meff. Mrssrer and Mz- 
CHAIN, faw only the more luminous part of their nebulx ; 
the feeble fhape of the remainder, for want of light, efcaping 
their notice. ‘The difference will appear when we compare 
my obfervation of the g8th nebula with that in the Connoiffance 
des Temps for 1784, which runs thus: ‘* Nebuleufe fans étoile, 
<¢ d’une lumiere extremement foible, au defius de Vaile boréale 
66 de la Vierge, fur le parallcle et pres' de: Vetorle N°'6)/‘cin= 
“<quicme grandeur, de la chevelure de Beérénice, fuivant 
Pecamsterp.. M. Mrcwain Ja vit le 15° Mars, 1584" 
My obfervation of the 30th of December, 1783, is thus: A 
large, extended, fine nebula. Its fituation fhews it to be M. 
MEssier’s 98th; but from the defcription it appears, that that 
gentleman has not feen the whole of it, for its feeble branches 
extend above a quarter of a degree, of which no notice is taken. 
Near the middle of it are a few ftars vifible, and more fufpected 
My field of view will not quite take in the whole nebula. See 
fig. 1. tab. XVII. Again, N° 53. “* Nébuleufe fans étoiles, 
op decouverte au-deflous et prés de la chevelure de Bérénice, 4 
< peu de diftance de l’étoile quarante-deuxieme de cette conftel- 
“6 lation, fuivant Framstrep. Cette nébulenfe eft ronde et 
“© apparente, &c.” My obfervation of the r7oth Sweep runs’ 
thus: A clufter of very ¢lofe ftars; one of aie moft beautiful » 
objedts I . remember to have feen in the heavens. The clufter 
appears “under the form of a folid ball, confifting of fmall ftars, 
quite comprefied into one blaze of light, with a great number 
of loofe’ ones furrounding i it, and Ses vifible in the getre-: 
ral mats. “See fig. iy hae ou fi 
en ‘Tegan my ‘prefent feries of Bier illtotie I furmifed, 
that feveral nebulae’ might yet remain undifcovered, for want’ 
of Sufficient light'to dete& them’; and'was, tlidref¥ie, in Hepes 
of 
