more constantly than expectorants. Blood-letting 
facilitates expectoration. <A blister will do the 
same. ‘The diffusible general stimulant, carbonate 
of ammonia, acts in this way ; so do many of the 
acrid stimulants, as mezereon, indian turnip, senega 
snakeroet. Yet they have other effects more con- 
spicuous, more steadily developed. Mucilages and 
" oleaginous decoctions are placed with expectorants. 
DPhey reach the kidnies and skin quite as surely 
as the bronchia and cells of the lungs. In short, 
not to give more examples of the inosculating 
effects of the subjects of this hybrid class, 1 would 
observe, that it is one of very obscure and unstead- 
last character, embracing medicines which often 
fail in producing the effect of promoting and fa- 
cilitating expectoration ; often do this, when ef- 
fected, by a secondary or even more remote.effect, 
the primary one being that of a general stimulant 
involving the lungs and its appendages as a part 
of the whole thus incited to increased action. 
These observations bear on the name, and on 
the definitions of the class, usually given by au- 
thors. ‘They will tend to shew what I have been 
inculcating in these lectures, that classification is, 
beyond a few aggregations, useless, ineffective of 
the object for which it is designed, and misleading 
to the student and young practitioner. As I am 
not however opposed to the employment of the 
_ articles arranged by writers under this class, but 
on the contrary know them to be useful in practice, 
though still very second-rate remedies, I shall 
sketch the outlines of whatis thought of their mode 
of operating. and their efficacy; guarding you 
against receiving them as agents of any specific 
tendency to affect the lungs and bronchia. There 
are no remedies of such effect. Whatever effect 
they evince upon the respiratory organs and funt-— 
