378 
THE GEOLOGIST. 
fiideratioti have the same thickness of the calcareous tube. The fonuer occurs 
only at Speeton and the latter at Hunstanton ; in order to distinguish the two, 
the title " irregularis " may be applied to the latter as a vjiriety. 
Serpula triserrata, a species found on a specimen of Ammonites complanatus, is 
distinguishable by its three serrate longituciinal ridges. A similar form occurs on 
ostrese from the Kimmeridge clay of West Norfolk. 
Terebratula semiglobosa is common at Speeton, but very rare at Hunstanton. 
T. biplicata is very common at Hunstanton, but is not known at Speeton. 
Inoceramus Iseviusculus, Bean, a large smooth species something like I. Cuvieri. 
The Ammonites alternatusof Woodward is now kist ; it was probably a variety 
of A. serratus, Park. 
Belemnites minimus is sometimes two inches long in the Hunstanton Cliff. 
The vertebra of Polyptychodon would be, if perfect, about six inches in diameter 
and three in thickness. 
The small specimen figured in Geologists' Association Proceedings, Plate II. 
fig. 9, evidently belongs to the Turbinolian family of corals, and possibly^J to the 
genus Trochocyathus instituted by Messrs. Milne-Edwards and J. Haime, in 1848. 
The specimens as yet obtained are not sufficiently numerous nor perfect for a 
rigid comparison with other forms, or to admit of a sufficiently detailed descrip- 
tion should the species prove to be new. The constricted form of growth is 
very common in the Parasmilia of the Upper Chalk, and has no specific value. 
The characteristic fossils of the Red Chalk at Speeton are Terebratula semiglo- 
bosa, Belemnites minimus, and Vermicularia elongata ; and at Hunstanton, Tere- 
bratula biplicata, Belemnites minimus, and Spongia paradoxica. 
FOREIGN CORRESPONDENCE. 
Notices of the Meteorite of Tulhagh and of the Tertiaries of Horn. 
Read before the Imperial Academj/ of Sciences, Vienna, 7 th March, 
1859. Communicated hy Count Marschall. 
1. — Meteoric Stones, 
The meteorite which fell, Oct. 13, 1838, near Tulbagh, Cold Bokkeveld 
(Cape of Good Hope), already analyzed by Prof. Faraday, has been 
submitted to a new investigation by Mr. Harris, in Prof. Wohler's 
laboratory at Gottingeu. This meteorite, in its black, opaque, and 
soft substance, greatly resembles that of Kaba (Hungary). 
The analysis discovered in it 1.67 per cent, of carbon, and 0.25 per 
cent, of the same bituminous substance as was met with in the Kaba 
meteorite, a substance declared by Prof. Wbhler to be of undoubtedly 
organic origin. The inorganic constituents found in this meteorite 
are, iron, 2.50; nickel, 1.30; sulphur, 3.38; silica, 30.80; oxydu- 
lated iron, 29.94:; magnesia, 22.20; lime, 1.70; alumina, 2.05; 
oxide of chrome, 0.76; potash and soda, 1.23 ; oxide of manganese, 
0.97; copper, 0.03 ; vestiges of cobalt and phosphorus, deficit, 1.22 
