An arbitration clause appended to a contract is not apt to confer on the arbitrators jurisdiction over disputes arising from a settlement agreement, even a non-novative one, relating to disputes originating from the same contract, since the principle of autonomy of the arbitration clause vis-a-vis the transaction to which it relates entails its extension only to the grounds of invalidity of that transaction, excluding its operation in respect of relationships arising from subsequent contracts, in relation to which the earlier transaction containing the clause constitutes merely a historical antecedent.