24 
Addison, on Blood-corpuscles. 
agent. But before any actual change of figure in the cor- 
puscles occurs, we must suppose a disposition to the change, 
and therefore we may conclude that such a disposition 
may be removed by an appropriate — a counteracting agent. 
Lastly, we regard the facts as substantiating the doctrine 
that the fluid element of the blood has a pathology distinct 
from that of the corpuscles. 
