Minerals from New Holland. 307 
would give additional interest to the specimens, by di- 
recting future discoverers to the spot where others of 
still greater interest might probably be met with. 
They comprise several species of the genus Kouphone- 
spar, with varieties of rhombohedral and uncleavable 
quartz of Professor Mohs. ‘Their uniform gangue is 
amygdaloidal trap, to which they are attached in 
geodes, or groups of implanted crystals, or in com- 
pact nodules filling up the cavities of the rock. 
This trap is exactly similar to that brought from 
Ireland, the Hebrides, the Ferroe Islands, and, more 
recently, from Nova Scotia. There are a few masses 
of a more compact character among the collection, 
giving evidence of the contiguous occurrence of gen- 
uine basalt; thus offering a new object of interest, 
which we hope will induce some enterprising natural- 
ist to explore this region, now that the facilities of 
communication with it have so much increased. 
Less is known of its mineralogical productions than 
of any other department of its natural history, though 
the public has been favored with the journals of sev- 
eral scientific expeditions to Australia. ‘These works 
I have consulted with the view of yc ng t 
and basalt in the interior, as well as upon the’ sea- 
coast; but these rocks are spoken of only as afford- 
Among 
Eid a made a survey of the western coast of 
