Astronomy. 129 
(2.) Nereograpsus, Geinitz. (Syn. Nereites, Myrianites, Nemertites, 
Auct.)—Graptolithina, with two series of cells, without an axis, or with a 
very soft axis, in the centre of the common canal. (over 7 species.) 
Representing Nereites Cambrensis, Murchison 
the specimen of Saalfield in Thuringia I have clearly seen 
the apertures of the cells. 
(3.) Cladograpsus, Geinitz.—Graptolithina, with two arms, or forked 
Graptolithina. (7 species.) Representing Gr. Murchisoni, Beck, an 
- ramosus, I. 
4.) Monograpsus, Geinitz, (Syn. Monoprion et Rastrites, Barr.) 
Graptolithina, with one series of cells and a solid axis. (28 species.) 
. tiolites, Barrande, (Syn. Gladiolites, Barr., Graptophyllia, 
Hall.) Graptolithina, with two series of cells, covered with a fine reti- 
culated membrane, forming a middle axis on one side of the commnon 
canal. (1 or 2 sp. 
Grapt. Hallianus, Prout, and Lophoctenium comosum, Richter, 1 piace 
. Bar- 
traces of iodine. 
Dresden, April 12, 1852, mis 
[Dr. Geinitz has just published on Graptolites, the following elabo- 
rate and elegantly illustrated work. “ Die Versteinerungen der Grau- 
wackenformation in Sachsen. Heft]. Die GraProtiTHEN. 60 pp. 4to, 
With 6 lithog. W. Engelman, 1852. This work contains a review of 
€ Species, synonymy and classification of Graptolites. ] 
IV. AsTRONOMY. . 
1. Sixteenth Asteroidal Planet—Psyche, (Astr. Jour., No. 39.)—A 
new planet was discovered March 17, 1852, by Prof. De Gasparis at 
Naples. Its light was equal to that of a star of the 10-11th magnitude ; 
and its position March 17, 1852, 9b 52™ 325-5, Naples m. t., was R. 
A. 9h 57m 565-7, and N. Decl. 12° 51! 20’. s 
The following elements of its orbit are computed by Mr. G. Rimker 
¥ Hamburg, from the Naples observations of March 19 and 29, and 
the London observation of April 4, which they represent precisely : 
but they differ widely from elements computed by Mr. E. Vogel. © 
1852, April, 1:0, m. t Berlin. 
— longitude, . 2 ee ie - ae ee 
- of periheli eo we RS ‘ ; wo 
cade wales (> oes an. 0-0, 1852. 
“Tnelination, . . * at 
Angle of excentricity,. —- 7 42 56 3 
a Semi axis-major, : 0°4965374 
mean daily motion, j 2" 
Secon Szars, Vol. XIV, No, 40—July, 1852. Ms 
