400 Miscellanies. 
ffinities are overlooked. It is to be tested only, as it does, or does not, afford 
most direct means in leading to the names of unknown minerals. The pr ped 
n Ww fnnded « are of oy. observation and possessed PP: sufficient con- 
Be thei ir knowledge of other sciences, or require 
an Geossonicn: tminuteness of detail. . What is more easy, for example, than to set- 
whe 
raphy, the orders in the two first classes may be ascertained with nearly - same 
degree of ease. The system of crystallization, in most cases, is a problem to which 
the lowest attainments in Mineralogy are adequate ; or rather, it is one, eo until 
the pupil is able to master, he is unprepared to take a single step to advantage in 
the study of the mineral kingdom. The orders in the es ie class need only to 
be mentioned, to be recognized.” 
The arrangement of the species in each order is in a series, de- 
pending upon the property of hardness, except in the two last orders 
of the third class, where it depends upon the property of specific 
gravity. 
‘** Where the series depends upon the property of hardness, the orders commence 
with the softest species, and terminate with _ ms dest: in the other case, it begins 
bee’ the digdatont apa sorminsics eeitle the hea 
ing at the names 
ough ti ie use of this system, it would feeee, —— ae to have divided the adigns 
into genera, depending upon fix =e egrees of See and specific gravity. The 
A : : oct 
division in question, besides the advantage of render ing the arrangement considera- 
bly less complicated, both as respects the nomenclature and practice.” 
Part IL. explains the object of nomenclature in general, and of 
systematic and trivial nomenclature in particular ; 3 and it is stated for 
the following reasons that the nomenclature in an nti system 
must be a trivial one. 
“In an analytical system, we must not look for similarity among the species of 
any one class or order; to name the species in such a manner as to suggest the class 
and order to which they individually belong, instead of serving to illustrate or sim 
e mineral kingdom, would only produce atmae 
“It is true, provided the names employed in “ anclytical method do not lead u: 
back to the orders a classes of that method, it would-not be very o| sivetonate 
what denominations were employed, whether fees of the systematic Say 
or the chemical names, so far as minerals are possessed of ew yet, 
of this method js only a speliesinary step, those which are the 
convenient seem preferable, and these are the trivial names. 
