Astronomy. 127 
and one appealed to by the lecturer as confirmatory of his theory of 
aD ancient coast extension between Ireland and Spain. 
There is still much to be done in the investigation of the natural his- 
tory of our seas, and many districts remain for more minute explora- 
worms that fresh discoveries may be looked for. Yet even now, new 
and remarkable forms of mollusca may occasionally be procured, and 
r. Ma 
. . 
during the autumn of last year in a cruise with 
d Dr. Carus, who selecting the 
1, Ne 
na discovered by M. de Gasparis, of Naples, on the 29th July, 1851. 
'S appearance was like that of a star of the 9th magnitude, and its 
apparent place at 114 44m 535-7 m. t. Naples, was R. A. 18" 15™ 595-94, 
and Southern declination 26° 3! 54”. 
: @ following elements of its orbit are published by Mr. G, Riimker 
of the Hamburg Observatory. They are computed from the Naples 
geeration of July 29, and the Hamburg observations of Aug. 29 and 
pt. 27, 
1851, October 1:0, Greenwich m. t. 
Mean longitude, « _ 293° 49’ 51°49 
Longitude of perihelion, . 27 35 37-57 M. Eqx. 
Poo. mode... ; 
: 293 52 54 -76 § Jan. 0. 1851. 
Inclination, . 8. 11 43 42 -75 
Angle of excentricity, ,. 10 51 34 29 
Excentricity, : ‘ ; 0°1884017 
Seg semi axis major, . - 0-4228486 
mean daily motion, - 2°9157322. 
2. First Comet of 1851.—Dr. D’Arresr at Leipsic, discovered a tel- 
hone comet on the 29th of June, 1851, and from the observations of 
= 29, July 2 and 6, he computed the following elements. 
Perihelion passage, 1851, July 6°35816 m. t. Berlin. 
Longitude of perihelion, . +  324°35/ 59-8 bape. 
iS a “ Asc. . 152 41 33 2) Egqx. 
Inclination, 4 - : : 14 43 38 8 pees 
ng, perihelion distance, >... +. . 00992774... 
aa’ . . ME one epeanet 
Motion, ag Direct. 
er 
ey . 
