“The payment must be ‘in respect of’ the debt or claim. The debtor’s express declarations at the time of payment are conclusive …”
“… although the claimant must in all cases give some evidence that the payment relied on was made in respect of some debt, the circumstances attending the payment, even without any direct evidence, may be such as to render it improbable that the payment could be made for any other purpose. When once it is established that the payment was made in respect of some debt and that no other debt than the one sued for then existed, the inference may be drawn that the payment was in respect of the debt sued for.”