Under the heading of 'Tardy Truths' _The New Nation_, of May 7th, republished a compendium of matter some time back given to the world by M. Emile de Girardin, in his paper _La Presse_, and in pamphlet form. This matter purports to have been written by a so-called _ex-commandant_ in the late Polish insurrection, a certain M. Fouquet, of Marseilles. Poland has no reason to fear truth. On the contrary, the difficulty has been to find means to set it forth, avenues to the public intelligence and sense of justice, whereby those might be reached who forget the Latin saying: _Audi et alteram partem_. The Poles are willing to hear reproaches, if such as may be profited by, or if the self-constituted judges be conscientious and unprejudiced. But, may we not ask why it is that many of these _so-called_ truths, professedly founded upon personal acquaintance with Polish localities, men, and institutions, spring from sources in many respects similar to that of the recent publication in _La Presse_, from individuals who never were in Poland beyond a few hours spent in Warsaw--who have seen nothing of the country, except as passing in a passenger car from Kracow to Mohilew, a distance of about seven hundred miles, traversed in about twenty-four hours--who never understood one word of Polish, of Rossian, or of any of the cognate tongues--who have never conversed freely with the inhabitants--who may have been entertained during a few hours by Government employes or by cautious and distrustful patriots--who were in a hurry to see St. Petersburg and its _elephant_, and who learned Polish history in the Kremlin, in the saloons of some former prince from the Altay or the Caucasus, or, at best, in the work of M. Koydanoff? _La Presse_, in Paris, undertook the charge of saying things which her franker sisters, _Le Nord_ and _La Nation_, the avowed organs of Rossian czarism, did not venture to propound. M. de Girardin, whose paper has, since a certain period, taken a liberalistic, even socialistic, infection, is a living example of sundry anomalous eccentricities, such as Alcibiades, Gracchus, Mirabeau, etc., who speak most liberally, and act in a contrary manner. He seems to have been adopted by Rossian diplomatists, and those sanguine of Rossian _destiny_, as a most convenient defender of czarish ambition--the more so that they found in him a revealer of things never thought of by the czar; as for instance, liberality and even democracy in Great Rossia, on the plains of Okka and Petschora. We might compare M. Fouquet's account of Poland with Neumann's account of Kosciusko, or Freneau's of Washington, but will content ourselves with referring the reader to better European sources of knowledge, as the _Breslau Zeitung_, _Ost Deutsche Zeitung_, _Czas_, _Wiek_, _La Pologne_, etc.