This, indeed, is a kind of depletion which no country can bear long; and, as it is, at the moment we are writing this, progressing at a rate beyond all precedent, it will not, we trust, be altogether uninteresting to inquire into some of the causes that have occasioned it. Let not our readers apprehend, however, that we are about to turn our fictitious narrative into a dissertation on political economy. Of course the principle cause of emigration is the poverty and depressed state of the country; and it follows naturally, that whatever occasions our poverty will necessarily occasion emigration. The first cause of our poverty then, is Absenteeism, which, by drawing six or seven millions out of the country, deprives our people of employment and means of life to that amount. The next is the general inattention of Irish landlords to the state and condition of their own property, and an inexcusable want of sympathy with their tenantry, which, indeed, is only a corollary from the former; for it can hardly be expected that those who wilfully neglect themselves will feel a warm interest in others. The next is the evil of subletting, by which property becomes overloaded with human beings, who, for the most part, are bound by no ties whatsoever to the owner of the soil. He is not their landlord, nor are they his tenants; and so far from their interests being in any way reciprocal, they are actually adversative. It is his interest to have them removed, and, as circumstances unfortunately stand, it is theirs to remain, inasmuch as their alternative is ruin since they have no place of shelter to receive them. Political corruption, in the shape of the forty-shilling franchise, was another cause, and one of the very worst, which led to the prostration of the country by poverty and moral degradation, and for this the proprietors of the soil are solely responsible. Nor can the use of the potato, as the staple food of the laboring classes, in connection with the truck system, and the consequent absence of money payments, in addition to the necessary ignorance of domestic and social comforts that resulted from them, be left out of this wretched catalogue of our grievances. Another cause of emigration is to be found in the high and exorbitant rents at which land is held by all classes of farmers--with some exceptions we admit, as in the case of old leases--but especially by those who hold under middlemen, or on the principle of subletting generally. By this system a vast deal of distress and petty but most harrassing oppression is every day in active operation upon the property of the head landlord, which he can never know, and for which he is in no other way responsible unless by having ever permitted the existence of it for any purpose whatsoever.