1 65 
« a leffer quantity than v/Kat they had been accuflomed to, will often 
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have ftronger eiieds than hadbefore commonly appeared. I knew 
<* a lady who had been for more than .twenty years accuftomed to 
take fnuff, and that at every thne of day ; but ilie came at length 
to obfervCg that fnoffing a 
ood deal before dinner took away her 
appetite ; and flie came at length to fmd, that a fmgle pinch 
5 taken 
Z' 
any time before dinner, took away ahuoft entirely her appetite for 
that meal. V/hen, however, ilie abftained entirely from fnuS' before 
dinner, her appetite continued as ufiial; and after, dinner, for the reft 
e took fniiif pretty freely without any inconvenience. 
of th 
e da 
J 
(I 
This is an inftance of the inequality of the power of habit in 
but in what cafes this may take place, wq 
exerting its 
** cannot determine, and muft now 
ordinary powers 
^•o on ni marking its ufual and 
When fnurf, that is, tobacco in powder, is firft 
anplied to the noie, it proves a 
imuiu 
] 
repetition that en 
entirely ceafes. 
is, and excites fneezing ; but 
}' 
a XY 
"V 
hen fnuff is firPt employed, if it be not both in fmall quantity 
and be not thrown out immediately by fneezing, it occafions fom 
^iddineffi and' confufion of head ; but by 
ceafe 
accuftom 
repetition thefe effects 
') 
to be produced,' and no other effect of it 
appe 
ars 
m 
the 
when not taken beyond the accuftom^ed quantity 
ut 
even in' the accuftomed, when it is taken beyond the ufual quantity 
9 
it prccluces fomevvdiat of the fame giddinefs and'confufion of head 
tha 
L. 
it did when firft employed ; and in feveral cafes, thefe eifed:s 
in the accuftomed, depending on a larger dofe, are not only more 
confiderable, as they ad on the fenforium, but as they appe 
ar a 
Ifo 
in other parts of the fyftem, particularly in the ftomach, occa- 
fioning a lofs of appetite, and other fymptoms of a weakened tone 
N 
m tna.t organ. ^ 
" V/ith rcfped to this,- it is to be obferved, that perfons who take 
a great deal of fnuff*, though they feem, from the power of habit. 
to efcape its narcotic effeds ; yet as they are often liable to go to 
excefs in the quantity taken, fo they are ftill in danger from thefe 
e 
ffeds 
operating m an in 
fenfible manner ; and 1 have obferved 
feveral inftances 
r 
or their^ being 
affeded in th 
fam 
e 
manner 
as 
perfons are from the lomr continued ufe of other narcotics, fuch as 
wine and opium ; that is, hj a lofs of memory, by a fatuity, and 
other 
N 
r 
