The National Bank of Australasia Ltd. brought an action in the
Supreme Court of New South Wales against Frank Morris Dobbs
to recover, under a guarantee, the sum of £998 8s. 7d. In its
declaration the plaintiff set forth the substance of the guarantee,
including a term that a certificate signed by the manager or
acting manager for the time being of the office of the plain-
tiff bank at which the account of the principal debtor was
kept should be conclusive evidence of his indebtedness as at the
date of the certificate. The plaintiff averred that at a particular
date a certificate in the form required showed that the principal
debtor was indebted to it in the amount claimed in the action. By
his first plea, on equitable grounds, the defendant alleged, in effect,
that he was a co-surety with two other persons and that it was a
term and condition of the guarantee that the plaintiff would not
release the securities of his co-sureties, yet the plaintiff without his
knowledge or consent did so. To this plea the plaintiff replied by
pleading the whole of the document constituting the guarantee, where-
upon the defendant demurred to that replication, and, in joining in
demurrer, also demurred to the declaration. By his second plea, also
upon equitable grounds, the defendant alleged that it was a term and
condition of the contract that the plaintiff would use due care in
honouring cheques purporting to be drawn by the principal debtor,
yet the plaintiff acted so negligently and improperly that it wrongly
honoured cheques to an amount equal to or exceeding the amount
claimed. The plaintiff demurred to this plea, relying principally on
the ground that the certificate of the manager was conclusive. By
a third plea the defendant alleged that neither the amount claimed
nor any part of it became or remained due to the plaintiff. To this
plea also the plaintiff demurred, relying on the same clause in the
document that the certificate of the manager should be conclusive
evidence.