E H5 .1 
whole body; at another in the upper or 
lower extremities, fometimes the heart 
beats with violence, at others there is an 
v i 
involuntary flow of tears, one while the 
pulfe is regular, at another irregular and 
in a ftate of fpafmodic contraction, fome¬ 
times a partial pulfation is difcoverable in 
fome particular artery, whilft the regula¬ 
rity of the pulfe announces that the reft of 
the arterial fyftem does not partake of this 
alteration. Laftly, the mufcles, and other 
parts pofleffing mufcularity, are affedted 
alternately, or at the fame moment. Can 
we in thefe phenomena avoid being aware 
of the exiftence of a common caufe ? 
Willis has made a very curious obfei- 
vation, which deferves to be taken notice 
of in this place. He fays, that he has 
feen feveral perfons who were obliged to 
leap, run about, and beat the ground with 
their hands and feet, to prevent their falling 
into violent convulfions of the vifeera, 
L which 
/ 
