FOREIGN CORKESPONDEN'CR. 
279 
per cent., a composition greatly analogous to that of the Kaba stone. 
According to Prof. Wohler's views the mineralogical composition of the 
Tulbagh meteorite may be expressed by the formula : ferrugineo- 
uiaguesian olivine, 84.32 ; indecomposable silicate, 5.46 ; sulphuret 
of iron and nickel, 6.94 ; chromate of iron, 1.11 ; carbon, 1.C7 ; 
organic bituminous substance, and traces of copper, cobalt, and phos- 
phorus. The first small specimens of the Tulbagh meteorite came 
into the possession of the Vienna Imperial Museum through M. de 
Struve, then resident Minister uf llussia at Hamburgh ; subsequently 
a fragment of 12 ^ ounces was purchased from Dr. Krauss ; and Sir 
John Herschel himself presented the Museum with a specimen of 
6^ ounces from the fragments sent to him by Mr. Maclear, the first 
scientific observer of the phenomenon. 
The total bulk of the meteorite, partly shattei'ed by its having 
fallen on stony ground, has been estimated to exceed five cubic feet. 
2. — Tertiaries of Horn {Lower Austria). 
These tertiaries, reposing on the crystalline rock-masses of the 
Manhartsberg, have attracted Dr. Rolle's attention on account of 
their fossil remains, which partly indicate an age earlier than that 
generally of the Vienna basin. They include, comparatively to the 
other Vienna strata, a greater number of gasteropods, indicative of 
the inferior tertiaries, with a smaller proportion of recent forms ; 
so that they may justly be considered the most ancient of tlie 
Vienna basin, those of Grund following immediately above them, 
and the ascending series of marine deposits being closed by those near 
Baden, Vbs, Pan, &c. Dr. Rolle's observations afford a new proof of 
the non-existence of any strictly determinable limit between the faunae 
of the neogene (upper miocene and pliocene) and of the oligocene 
and upper eocene deposits, overlying immediately the first, several 
organic forms being common to both divisions, in the same way as 
neogene species have continued to exist amid those of the present 
creation. 
By Dr. T. L. Phipson, of Paris. 
Discovery of Selenium and Tellurium at Vesuvius — Neto Minerals 
observed by MM. Napoli and Palmieri — Metamorphism undergone 
by Eruptive Rocks — A few Facts coyinected with the Physical Geo- 
graphy of t/ie Hautes-Alpes. • 
One of the most interesting discoveries that have been made for some 
time past in mineralogy is the following, which we owe to M. Raphael 
Napoli, professor of chemistry at Naples : — On examining the lava 
which has been emitted almost constantly by Vesuvius for the last 
Y 2 
