But, though these Committees are so many and so completely armed with powers, indications are not wanting that more abuses run at large in the departments than they, with all their eyes, are able to detect. The Senate, though it has no similar permanent committees, has sometimes discovered dishonest dealings that had altogether escaped the vigilance of the eight House Committees; and even these eight occasionally, by a special effort, bring to light transactions which would never have been unearthed in the ordinary routine course of their usual procedure. It was a select committee of the Senate which, during the sessions of the Forty-seventh Congress, discovered that the "contingent fund" of the Treasury department had been spent in repairs on the Secretary's private residence, for expensive suppers spread before the Secretary's political friends, for lemonade for the delectation of the Secretary's private palate, for bouquets for the gratification of the Secretary's busiest allies, for carpets never delivered, "ice" never used, and services never rendered;[32] although these were secrets of which the honest faces of the vouchers submitted with the accounts gave not a hint. It is hard to see how there could have been anything satisfactory or conclusive in the annual supervision of the public accounts during any but the latest years of this system of committee audit. Before 1870 our national book-keeping was much like that still in vogue in France. Credits once granted ran on without period until they were exhausted. There were always unexpended balances to confuse the accounts; and when the figures of the original grants had been on a too generous scale, as was often the case, these balances accumulated from year to year in immense surpluses, sometimes of many millions, of whose use no account was given, and which consequently afforded means for all sorts of extravagance and peculation. In 1870 this abuse was partially corrected by a law which limited such accumulations to a period of two years, and laid hands, on behalf of the Treasury, on the $174,000,000 of unexpended balances which had by that time been amassed in the several departments; but it was not till 1874 that such a rule of expenditure and accounting was established as would make intelligent audit by the Committees possible, by a proper circumscription of the time during which credits could be drawn upon without a regrant.[33]