95 [EME 
ordinarily appear to others, to be involuntary: 
Thus for example the successive rapid and almost 
imperceptible movements of the fingers, and the 
Syncronous actions of the muscles of the tongue, 
mouth and fips, in playing on the German flute, 
seem after long practice, to be independent of any | 
_ actof the mind, since we are inclined to think it)  - 
cannot produce such vehement and rapi 3 
tions. Yet here, each movement of 
and every action of the muscles before 
are the effect of a distinct and vivid 
‘* This continual exercise of the muscles then 
when a ship is under sail, and which I have be- 
fore remarked is in some measure performed even 
during sleep, is one of the most salutary effects of 
sailing. By means then of this gentle and regular 
exercise, the circulation of the blood is vigorously 
promoted through every part of the body, produ- 
cing so healthy an —- in Po minute vessels of 
the surface, that a uniform copious perspira- 
tion is effected. This is carried off as fast as it 
is exhaled from the surface of the body, by the 
of atmosphere and the perpetual succes- 
sion of its stimulating effects on the skin. Hence 
it is that there is always so intense and impatient. 
an appetite felt at sea; for the food taken into the 
system after undergoing the customary alterations, 
speedily pass off, that is, the liquid portion of it, 
by perspiration.” : 
—— 
MEDICAL USE OF EMETICS. 
Probably among the earliest remedies, from an 
_ bservance of the beneficial effects of spontaneous 
as . | 
= ‘ 
