E 256 .1 
are fpeaking, and of the mobility of the 
organs in which they are feated. 
The heart where we feel chagrin, joy, 
emulation, glory, love, jealoufy, in a 
word, all the exalted as well as ignoble 
paflions, is the machine on which the 
brain exercifes mod: its re-adtion, and 
where this re-adtion is mod: durable and 
conftant. It frequently renews itfelf, after 
it has once ceafed, and this renewal is fre¬ 
quently the caufe of an inward uneafy feel, 
which we are at a lofs to account for, and 
4 
confider as portentous of new misfortunes, 
but which ought rather to be regarded as a 
repetition of pad ones. 
We have juft been faying, that one 
property of the brain is that of re-adting 
(I am not aware of the mechanifm of this 
re-adtion, but fuch re-adtion is certain, 
and fhould depend in great part on the 
date of the eledtricity), that no change oc¬ 
curs when this re-adtion does not happen, 
and 
