332 ESSAYS AND OBSERVATIONS 



render the joints almofl: rigid, but not 

 altogether in {o great a degree as when 

 that fblution was injedled into the heart. 

 After half an hour, there were ftill fome 

 fubfultory motions obfervable in the muf- 

 cles. 



REMARKS. 



1. When we compare that part of the 

 foregoing experiment which relates to the 

 heart, with ibme experiments made by 

 Dr Whytt, where the opium was applied 

 to its outer part, we fee how greatly the 

 delicacy of feeling of the inner fide of the 

 heart exceeds that of its outer fide. 



2, We learn that the heart is fo far 

 from being exempted from the influence 

 of opium, as the learned Dr Haller fup- 

 pofes, that perhaps no mufcle of the body 

 can, by any means,be proved to be fo much 

 under its dominion as the heart, when 

 the opium is brought in contafl with its 

 inner fide ; in which way it will be applied, 

 if abforbed. 



3. ^Ve 



