22 071 the Effects of Opium 



taiy motioti intHem, it had strength to drag ' 

 them after its body.' ' j-:ji^::. 



Into the stomach of a frog 'thW prepared, 

 fbrty drops' of the solution Were injected ; ' 

 seventeen minutes after, all 'the- parts of the 

 animal above the point of the division of the 

 spine, v^ere violently convulsed, and in one 

 hour and forty minutes the animal was dead^. 



The upper part of the body was then sepa- 

 rated from the lower, at the* part where the 

 spine had been divided, and the following was 

 the state of irritability in the' different parts. 



To the muscles of the breast and those of the 

 superior extremities, salt was applied, but 

 without exciting '•■ the: least contraction or 

 motion. 



The iliac nerves below the point of the di-' 

 vision of the spine were compressed ; viVid and 

 frequently repeated contractions were excited 

 in all the muscles of the legs and thighs. 



This experiment was repeated several times 

 atid invariably presented the same result. .All 

 the muscles of the body above the point of the 

 division of the spine, lost the irritability; on 

 the contrary, below the point of division, the 

 irritability of the muscles remaine.d unimpaired, 

 after the death of the animal, as .was rendered 

 evident both by th^ compression of the nerves 

 and the applicatioa of salt. 



