106 Prof. Gautier on recent Researches relating to Nebule. 
Mr. Bond has observed, in a great number of cases, that 
masses of nebulous matter are associated with stars, frequently 
in the form of small tufts extending from the sou uth side. = 
in the rete of a spiral peliorda with the idea of a stellar conetia 
tion: for among the objects which present this peculiarity of 
form are found not only nebulze resolvable into stars but — 
of stars properly so called, such for example as the great m 
of stars of the constellation Hercules, where the exterior me 
evidently have a curvilinear arrangement. 
Other facts in relation to nebule.—In 1860, Norman Pogson, 
while at the Observatory of Dr. ree at Hartwell, noticed a 
change in the nebula, or mass of s rs, No. 80 of the catalogue 
of Messier, eae in the cs of the Scorpion, an 
very neara pair of variable >a & and S of the Scorpion, 
swine: sia a caro powe of 66, the stellar appearance 
ad very nearly ae ea 
than usual, wit th a marked central condensation. pt: 
patie recently Chacornac has obse rved, with the great tele- 
scope of Foucault, furnished with a mirror of silvered glass, a 
adapted to high magnifying powers, — annular nebula of Lyra, 
and he has shown that it may be resolved into a mass 
very small stars, exceedingly near to oath other, the more brik 
liant occupying the extremities of the smaller diameter. This 
® Prof. G. P. Bond has now en means of publishing a complete account of the 
Observations made on the * bula of Orion for fourteen years past with the ee 
refractor at Cambridge, and hopes soon to = about it. The comparisons of the 
pes I 
data can hardly fail to be interesting and to bring something new to dee 
structure has been seen by Prof. Bond, in perfect disti ee with the great t Clark 
m. Jour. 
Shjeiitnan ot 184 inches aperture.— 
“oS SSSR TELE ESF a 
