g6 Mr. Clift’s experiments to ascertain the influence , &c. 
the Edinburgh Medical and Chirurgical Journal for January- 
last, and made many months after the other experiments. 
From these experiments we have the following results : 
1 . That the muscles of the body of a carp four hours after 
the brain and heart are removed, can be thrown into powerful 
action. 
2. That the moment the spinal marrow is destroyed, these 
muscles lose all power of action. 
3. That when water is admitted into the pericardium, and 
the fish allowed to swim about, the action of the heart ceases 
sooner than when that organ is exposed to air, and the fish 
kept quiet. 
4. That whether the heart is exposed or not, its action con- 
tinues long after the spinal marrow and brain are destroyed, 
and still longer when the brain is removed without injury to 
its substance. 
5. That the action of the heart is accelerated for a few beats, 
by exposure of that organ; by exposure of the brain; injury 
to the brain ; destruction of the spinal marrow while connected 
with the brain ; by the connection between the brain and spinal 
marrow being cut off: while removing the whole brain pro- 
duces no sensible effect upon the heart’s action, and destroying 
the spinal marrow after it is separated from the brain renders 
the action of the heart slower for a few beats. 
