Reflections on some Mineralogical Systems. 43 
gris-antimoine-verre-mine, or, in French, mine d’antimoine 
grise vitreuse en masse, mine of gray vitreous antimony in a 
mass. 
6. Fixed and applied to only one mineral. Plombagine 
has designated carburetted iron and sulphuretted molybdena. 
7. Unique or singular; each mineral should have only 
one name: but here there is a real chaos in mineralogy. 
8. Distinct from all others, in order to avoid confusion. 
The question now is to know in what case we should in- 
troduce a new name. 
1. When a new mineral is discovered. 
2. When chemical analyses change the place of a mineral. 
°3. When a name transgresses the rules of a language or 
of analogy. 
4. When a name is in contradiction with the known 
propertics of a mimeral. 
5. When a name is applied to several minerals. 
rg Rules for forming systematic names. 
. They should be taken from the learned languages. 
They ought to be taken from among the principal 
trivial names, and at the same time .to mark the genus to 
mnie the fossil belongs. 
‘The name of the genus must be placed first, that of 
a species should follow ; as stlex quartzum, silex quartzum 
amethystus. The trivial name may be placed in a paren- 
thesis. 
4. Names taken from the Greek and Teun, like other 
trivial names, should be retained and employed with a Latin 
termination ; as zeolithus, serpentinus, creta,. 
5. Finally, in the formation of systematic names, we 
must observe the rules already given for the formation of 
trivial names. 
Such a mode of teaching might suit the borders of the 
Ohio, but cannot now be adsnitted in Europe. 
I have attended in Germany fourteen lectures in the form 
of prolegomena, and a course of mineralogy, of which the 
following is the quintessence : at Geavemen.4 it was neces- 
sary for the study of mincralogy that the world was created, 
ani that man was made.’ 
In the Same course it was affirmed that the town in which 
it was delivered was built in consequence of the mines 
which are found in its vicinity, and on no account that, the 
imines were discovered in consequence of the contiguity of 
the town. 
If we give a block of marble to Praxiteles, and another to 
4 common man, Praxiteles would make of his an Apollo, 
a Venus, 
