nts are ‘ 
ENS = CLASS XI.—SIALAGOGUES. 
SraLacoeues are substances which increase the. 
salivary discharge. ‘This may be effected by the masticatio 
tain acrid substances, or by the internal exhibition of certs 
cines. — MS. 3 * eae tee. 
_ Of those which act in the latter mode, mercury and Bl 2 flag ar 
the only ones that uniformly~produce this effect. No satisfactory 
explanation has been given of this peculiar power which they exert; 
and the inquiry why this should be particularly directed to th salivary 
glands, appears as fruitless as that into the specific virtue of any medi- 
cine. They do not from their sialagogue power appear to be of ad- 
in the treatment of any disease; salivation being only atest . — 
of their action on the system, but not in itself of any utility. 
The remaining sialagogues are those which — merely by toy 
ication, by mastication, and from their acrid stimulatin 
pe sce ota salivary discharge, they have been ft 
in toothach, and, as has been supposed, in some kinds of h 
.Erruines are medicines which occasion a discharge from tl 
nostrils, either of a mucous or serous fluid. They all operate — 
direct application, and generally in consequence of a greate’ or less 
degree of acrimony which they possess. Their practical uses, it is_ 
evident, must be very limited. By the evacuation they occasion, it 
is supposed that they may diminish the quantity of fluid in the neigh- 
boring vessels ; and that they hence may prove useful in rheumatic 
affections of these parts, in headach, pain of the ear, and phthal- 
mia. They are sometimes used with advantage in some of these af 
fections. _ It has likewise been imagined that they may be of use in 
_ preventing: apoplexy. 
CLASS XIIL—EPISPASTICS AND RUBEFACIENTS. _. 
re 
Turse, as they operate on the same principles, and produce the 
same effects only in different degrees, may be co. I bee 
Subdivisions of one clasg, 3 ‘ —s = 
— ; : EPISPASTICs, 
s are those substances which are capable, when g Pea 
of the body, of producing a serous or puriform. aan 
ing a se of inflammation 
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