25 
VOL CANIC EOCIS. 
Fehpathic. 
73 . 
Dracheniels, Auvergne. 
... 73) 
::: "S 
{Silica 
Alumina ... 
Potash, and Soda 
Pearlstone — same, with globules. 
Phonolite 6 } com ? ac * ^ 0< * a felspar — splits easily 
- Silica 
... 71) 
Alumina 
Potash 
::: 1 
Soda 
l Iron, &c. 
... 5> 
Obsidian 
Pumice — same — cellular. 
glassy Trachyte. 
Ascension Isle. 
Lipari Isles. 
Dolerite- 
Labradorite 
Augite 
Mbrnblendic. 
Silica 
Alumina 
Lime 
Soda 
Silica 
Lime 
Iron 
Magnesia 
granular. 
Basalt— compact Dolerite. 
Anamesite — between Dolerite and Basalt. 
NOTE ON SOME AUSTRALIAN FOSSILS, 
By W. W. Stoddart, F.G.S., F.C.S. 
Abstract of a Paper read at the Sectional Meeting, on April 10th, 1872. 
At the time of the discovery of Gold in Australia the geology of that 
Continent was almost unknown. In consequence however of the belief 
that this precious metal was only found in the older sedimentary and the 
igneous rocks, or in the Tertiary deposits formed by their degradation, an 
opinion became current that the Australian formations belonged to one or 
more of those systems, that is that they were either Palaeozoic or Tertiary. 
To this conclusion the Naturalist was compelled to demur because the 
existing fauna and flora of that country wear a more strikingly Mesozoic 
aspect than those of any other on the globe. The land animals are very 
frequently marsupials or those having a pouch in which the young are 
carried in the earliest stages of their independent existence. In the sea 
are the Port- Jackson shark— the only living Cestraciont— the Trigonia, and 
