 The nature of the contract may affect the rights of the parties when there is a suspensive condition.It has been held that, where an agreement of purchase and sale has been entered into subject to a suspensive condition, no contract of sale is then and there established; it develops into one of sale only on fulfilment of the condition.This statement of the law, or what has been described as the "Corondimas" principle, has been much criticised, even though it has consistently been applied in subsequent cases.