ac a lS ma 
" 
ie 
Mivcllanies im 
full: It is generally admitted, that it requires, at least, three observers to 
note all, and that the full moon obscures two thirds or three fourths of 
those which would be visible in its absence. In the present case, we ‘may 
safely say, that one half were rendered invisible by the light of the moon. 
On the night of the 10th, one observer saw 140, in 5h. 15m. [and 122 of 
them in 4h. 15m.] Three observers would hive seen’ 420 during the 
same time, [and in the absence of the moon, 840.] On'‘the night of 
Nov. 12, 1837, four observers saw at New Saven, 223 in five hours ; the 
moon at that time obscuing; goby eb one “fourth more _ in the 
present case 
“On the night of the 9th, the contre’ of. radiation appeared to be near 
a point in R. A. 35° N. D. 69°. 'The~more extended | of 
the following night led me to a it somewhere between this’ point and 
€ Cassiopeia. I have more confidence in this conclusion, as on the night 
of the 10th, the meteors were more abundant, and several | 1es Started 
from near the radiating point. Ican say with certainty ‘that this point 
lay somewhere within the triangle formed by the three stars ©, 4, and y 
 Cassiopei#.- From this point radiated at least three fourths of all the 
meteors seen on the nights of the 9th and 10th. Of the meteors thus 
a two thirds had trains. It was remarkable that of all those which 
had , there was but one which did not move from the radiating point. 
was during most of the time of observation somewhere be- 
and 60° above the horizon, and as the meteors generally made 
their appearance at more than 30° from this point, we should conclade 
. that es few would be observed to fall directly towards the horizon. ‘This 
was the case during the two nights. About fifteen were seen to descend 
towards the north; the remainder either rose, passing near the zenith, or 
moved towards the south in lines nearly rataltl to the horizon. The 
northwestern part of the heavens, including on the right the constellation 
10° or 15° south of the zenith. — From 3h. to 
4h. on'the morning of the 11th, = 5 hardly noticed one which did not come 
from the radiating point. Nori of the meteors seen on previous nights 
July 28th and August 6th inclasive) seemed to haye a common 
centre of radiation. As to magnitudes, it may be observed that the me 
teors were of two very distinct classes ; ;—onle composed of such meteors 
as are visible upon every clear night, This class contained one fourth of 
the whole number scen, and were distinguished by their small size, (not 
exceéding stars of the third magnitude, ) by their unconformable Shee: 
tions, and their greater velocity. ‘The other class, containing the remain- 
ing three fourths, were all as large as stars of the second magnitude, and 
half them were equal f in size to Venus as she now appears as the morning 
star. Of this class, but ome had a direction which could be called un- 
conformable, and at least two thirds of them had trains. Most of the 
