21 
ina word, they produce a distracting embarass- 
ment in the students’ mind and memory ; and, un- 
less he be wary indeed, will taint his practical 
views, with ill-digested and perverted ideas of the 
power of the remedies heis to use. The revised 
system of Callen by the late Professor Barton, 
considered, and shewn to be obnoxious to the ob- 
jections presented by the first outline. 
A consideration of Dr. Young’s sectional division 
into chemical, vital, and insensible agents: and sub- 
sectional classification into those causing perma- 
nent, partial and transient action; and those that 
primarily, and secondarily diminish action or sen- 
sation ; and finally, those which are absolute speci- 
fics. 
cient and certainly beautiful arrangement, to 
meet all the exigencies of the distracting materials 
it is intended to group and generalize, fully shewn 
by illustration. The terseand comprehensive, and 
also beautiful, because brief system of Darwin, 
inquired inte ; and its like inaptitude to grasp at all 
‘ojecting angles and irregularities of the code 
e seein proved. 
The classification of Dr. Marray into general 
and local stimulants ; chemical remedies ; mechan- 
ical remedies ; with the subsectional division of the 
general stimulants into diffusable and permanent, 
seems at the first view, to be as nearly unexception-_ 
able as any scheme of classification which could 
be devised. It doubtless, isso, taking into view 
the present state of medical science. Ithas been 
adopted, by a late writer* on the elements of 
Therapeutics and Materia Medica. The order 
has been. Speman cnet stab though 
* Dr. Chipiied* 
The utter incompetency of this apparently suffi- oe 
