Miscellanies. 399 
determine the place of a mineral by analogy, — eet minute sip * feu pad 
acters,—an advantage which no purely Ss. ame 
system in Botany, it is superior to all other methods spe a ‘certain lt fr ctw: 
edge is acquired, but at first, is liable to confuse and discourage. 
His classes and orders are formed as follows: “ The mineral king- 
dom is divisible into three classes; 1. Minerals possessed of regular 
forms; 2. Minerals yielding regular forms only by cleavage; 3. 
ae destitute of regular forms, and not affording them by cleav- 
he first may be termed the Crystallized class, the second the 
Seale veicliiced class, and the third the Uncrystallized class.” ‘The 
two first classes are divided into orders by their different systems of 
crystallization, or primary forms. The third is divided into three 
orders, according as its contents are solid, liquid or gaseous. The 
following remarks respecting these divisions are from the author. 
“It may require an explanation, why a mineralogical method should, un like the 
systems in Zoology and Botany, make provision for any but perfect or crystallized 
i it i 0 
rt 
the highest degree of perfection, in its characters, under which it is capable of ap- 
aring. sem although ie potas of plants, ordinar’ ily ae our observation, is 
i fect i as i e fact, since they 
are all possessed of an active prin onmuna  adlsaiaemaemeniiaeataia ance them 
to maturity ; in addition to which, we have no difficulty in finding other individuals 
of the same ee already in areca ot the —— srigenes to enable us to 
et ahoie ae aie 1 kingd Sa 
P 
pbb a un stallized minerals constitute by far the largest ‘part of re 
become, as som 
unlike the determination of imperfect Lec by the 
perfect, it is seldom possible to determ' e them from seis association with wi oe 
lized individuals of the same species. From this we see, that a method whic 
omit to provide for such minerals as are not fully perfect in hie characters, suid 
be extremely imperfect in general practice. 
** As a con: ence of this necessity of providing means for the otha of 
perfect minerals, has arisen the frequent division of the species. Thus, portions 
within ( ow 
takes place in the cryst stallized “individuals of a mineral kingdom hich 
only should we expect to find the rule of preserving the species anbroksadl observed, 
since they alone correspond to the classifiable objects in Zoology and Botany.” 
The author farther explains and vindicates his system in the fol- 
lowing remarks. 
“The present arrangement is not liable to any objection, on the ground that the 
natural relations among the-species have been disregarded, much less that chemical 
