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Experiment XIX. 
Having found one day among my frogs* 
one which appeared particularly lively, 
with one hand I laid hold of the coated 
leg, and with a Aiilling touched the coat¬ 
ing and mufcular parts ; by this means, I 
likewife obtained the movements, and 
have repeated this a thoufand times fince. 
As foon as I was aware that I could in 
a certain degree render myfelf matter of 
this principle, and caufe it to circulate by 
means of the coatings, I conceived an 
idea of trying if it were pottible to attain 
the fame end, without depriving the 
mufcles of their teguments. 
Experiment XX. 
With this view, I fattened a frog upon 
a table by means of pins. A piece of 
ttlver patted under the thigh, ferved as a 
coating; Aiding my fciflars very gently 
over 
