496 HASTINGS—POLICE POWER OF THE STATE. _ [June19, 
police power and its subsequent development, so we shall see as we 
have seen, that the maintenance of the due equilibrium required 
and caused the police power of the states to keep pace with the ad- 
vancing application of the fourteenth amendment also. The rais- 
ing of the levee on one side of the Mississippi river and crowd- 
ing it forward against the waters does not more inevitably call for 
a corresponding increase in height on the other side. 
