“So far as the circumstances are at present known, in a statement and minute subscribed by me, of this date, and bearing reference hereto; providing always, that the same commissioners shall be bound to hold just count and reckoning to me for their respective transactions and intromissions in virtue hereof; and, lastly, I hereby declare that this commission shall endure and continue until the foresaid powers are accomplished, so far as concerns the payment and extinction of the foresaid debts.”