 On the rare occasions when the total paid did not equal the total collected, other clerks working for the Inspector would examine the paper trail of documents so that the numerical errors could be found and corrected.The United States improved on the British check clearing system and opened a bankers' clearing house in the Bank of New York on Wall Street, New York in 1853.Instead of the slow London procedure in which each bank clerk, one at a time, stepped up to an Inspector's rostrum, in the New York procedure two bank clerks from each bank all worked simultaneously.