428 Geological Specimens from Tasmania. 
when breathed upon emit that odour common to all argil- 
laceous substances, and I have no doubt of its being of the 
same family of minerals. 
No. 4, found on the surface at St. Paul’s Plains. 
This is Lievrite or Yenite imbedded in quartz : it is rather 
a scarce mineral, and is found in Elba, at Rio, La Marina, 
and Cape Caluute. It is said to have been met with in 
Siberia, but has certainly been discovered in Brodgang Mine, 
Fossum, Norway. 
No. 5, This specimen is a small one, and not labelled. 
It is magnetic iron ore, and nearly attracts the needle as 
powerfully as native loadstone. It is a valuable little 
specimen. 
No. 6, Gypsum from near New Norfolk. 
This is gypsum, as you supposed. It is granular anhy- 
-drous gypsum,—scaly anhydrite. 
No. 7, Found on St. Paul’s Plains. 
It is Augite, Pyroxene, composed of silex, lime, protoxide 
of iron, protoxide of manganese and alumine. It is met 
with in the production of yolcanos, and in all volcanic 
countries. 
No. 8, Asbestus, from the Asbestus Mountains, near 
George Town. 
This asbestus is imbedded in a very valuable mineral 
called steatite or soap-stone, and is a very interesting 
specimen. 
The steatite contains a small vein of silver, which by the 
way is not uncommon in this mineral, and is met with in 
most of the primitive mountains. 
It is used for the manufacture of the finest earthenware. 
No. 9, Slate from Port Phillip, Australia. 
This slate is rather soft and adheres to the tongue, and is 
smooth to the touch. 
