Experiments by Hertwig and Eckel seem to show that saliva loses its virulence on the supervention of cadaveric rigidity or putrefaction in the dead body.

Or the Subjective is taken as primary, and then we have to account for the supervention of the objective, which spiritual philosophy supposes.

It is the creation of a constitutional condition that requires the supervention of legislative power in the exercise of legislative discretion to give it effect.