426 _ Scientific Intelligence. 
the earliest larval condition of the other,—the Intestinal worms being the 
parents of the Infusoria ? 
Cuma, the young of cand —With regard to the Crustacea called 
Cuma; \.cannot say positively that this gronp must as a whole be sup- 
ressed. But [ can state with confidence, that all the species of that 
genus which I have had an opportunity to examine alive,—and | have 
watched three—are young of Paleemon, Crangon and Hippolyte. ‘They 
~were actually hatched from the eggs of Crangon 7-spinosus, Palamon 
vulgaris, and Hippolyte aculeata. 1 have full memoranda u upon this 
subject at Cambridge. The genus Nebalia includes in part at least, 
embryonic orca, one species of which | have observed here. 
IV. D ccaonnere, 
1. Denial of the supposed New Planet, (Gould’s Astr. Journal, No. 
_ 36.) —Professor Mpeg has announced that he has satisfied himeelf 
that the body seen by Gasparis, Dec. 8, 1851, and supposed to be a 
of the Senfienberg ‘Observatory, discovered a telescopic comet in the 
astellation Canes Venatici. The comet had at one period two tails 
sarently in the same tine; one about 30’ in length very bright, 
ed from the sun, the ‘other 8 long, and turned towards the sun 
_ The following parabolic elements of its orbit have been computed 
y Mr. J. Breen from the Me pe chen of Oct. 24, and the Cam- 
bridge observations of Nov. 4a 
Perihelion passage, 1851, Sept 3 em 805968 Gr. 
Kangiuals af perihelion 838° 45’ pepe \ Eqx. 
* node, , 
a 44 28 49 ‘8 § Jan. 1. 
nelination, a to 74 0 39 
ive: Pavilion distance, or é 9°1493178 
Mot . : 7. Direct. 
V. Avrora Boreatis. 
Great Aurora Borealis of February 19th, 1852; by Professor 
D. Oars of Yale College. *—Although full ind elaborate descrip- 
tions of cases ploy aurora borealis, have been so ofien recited as 0 
render it unnecessary, perhaps, to multiply them further, yet concise 
and systematic Saal Aled of great auroras will still be valuable, for 
This grand aisle seemed to bse” ‘tees in in a course of preparation 
for seve ays previous. As early as the morning. of the 15th, 
siren nuae" were seen in the north about day-break. On the aba 
of the 16th, a northern light was observed, accompanied db 
streamers. The 17th was cloudy and snowy. Wednesday morning 
* This enlpaeribg othe the earlier of 
this a appear as an article in + part 
