months ago it was discovered that an extensive forwarding merchant in this port had been systematically omitting entries at the Custom House for years past--no duty being chargeable--merely with a view to save the payment of the Liverpool dock and town dues; and the extent of such evasions may be conceived from the fact that--small as these dues are--the dock estate is considered to have suffered to the extent of at least £20,000 from the practice. During the past week, another case of the same description has been discovered; and there is too much reason to believe that this practice has become very prevalent on the part of the inferior clerks of our merchants. Under these circumstances, a complete change in the mode of conducting the statistical department of the Board of Trade is imperatively called for; and, until this is effected, the sooner that Board suspends the issue of its delusive compilations, the better for the cause of truth. LIVERPOOL, _12th March 1852_. _POSTSCRIPT_. [The revelations contained in the foregoing article are of a nature eminently calculated to excite the astonishment of those who put faith in the representations of the Free-Traders. Although fully convinced of the accuracy of our esteemed correspondent, and the extensive means of knowledge which he possesses with regard to mercantile affairs, we considered it our duty, before publishing this article, to institute inquiries of our own in other quarters, and we are satisfied that it states the plain truth, without any feature of exaggeration. Indeed, it is in entire accordance with the tenor of the Trade Circulars, one of which, now lying before us, dated so late as the 22d of March, and emanating from a well-known Free-trading Manchester firm, refers to "the enormous losses sustained upon the exports made in the early part of last year, and the still greater losses on imports, many of which have been sustained by the same parties." In Glasgow, during the last year, the commercial disasters have been frightful; and we are not aware that, up to the present time, there has been a symptom of the turning of the tide.