specified event within fixed time
Contingent contracts to do or not to do anything, if a specified uncertain event
happens within a fixed time, become void, if, at the expiration of the time fixed, such
event has not happened, or if, before the time fixed, such event becomes impossible.
When contracts may be enforced, which are contingent on specified event not
happening within fixed time : Contingent contract tutu or not to do anything, if a
specified uncertain event does not happen within a fixed time, may be enforced by
law when the time fixed has expired and such event has not happened, or before the
time fixed has expired, if it become certain that such event will not happen.