90 
The first extended computation of Professor HuBBARD 
consisted in the determination of the zodiacs of all the 
known asteroids, except the four previously published in 
Germany. In November, 1848, he presented to the Smith- 
sonian Institution the Zodiacs of Vesta, Astrea, Hebe, Flora, 
and Metis; and to the first volume of the Astronomical 
Journal, he contributed those of Hygea, Parthenope, and 
Clio, making the list complete up to that time. That o 
Lgeria followed, soon after his satisfactory determination of 
the elements; and although he published no others, it was 
his intention as well as endeavor to prepare the zodiac for. 
each successively discovered asteroid. These zodiacs give 
for each planet, —as suggested by Gauss, and computed by 
him for Ceres, Pallas,and Juno,—the northern and southern 
limits of its geocentric position for each right-ascension, and 
enable us in many cases to draw immediate inferences as t0 
the possible identity of any recorded star with the planet in 
question. It is much to be desired that the series of asteroid- 
zodiacs should be completed, and a key thus furnished for 
the solution of many interesting questions of identity, which 
have ne in the past, and must present themselves here- 
after. 
None of you, Gentlemen, can fail to recall the enaguificess 
spectacle exhibited by the great Comet of 1843. Through 
the early evenings of March, it trailed like a gorgeous ban- 
ner of flame across the Western sky, the first visitant of its 
kind within the memories of many a full grown man, and 
rekindling the awe and wonder of those, whose impressions 
of the cometic glories of 1807, 1811, and 1819 had become 
dimmed by time. Its magnificent train extended at night- 
fall nearly parallel with the horizon through an are of some 
40°, rivaling the later, though perhaps equally splendid, 
manifestation of the great Comet of 1858. So great indeed 
