As to form--they are all written, not, lithographed; they are on paper of the same make and size, and out of the same lot, as you observe by the manufacturer's stamp--a representation of the Capitol in the upper corner. They are in the same hand, an easy legible business-hand, though three of them are written with a backward slope. Those who sent them have not sent me the envelopes with them, except in one case, so that I cannot tell where they were mailed. Neither is any one of them dated inside at any town or post-office. But, by a wonderful coincidence, every one of them is dated at "No. 17 Merchants' Exchange." A busy mart that No. 17 must be! And it is a still more curious coincidence that every one of these six industrious chaps has been unable to find a sufficiently central location for transacting his business. Every letter you see, contains a printed slip advising of a removal, as follows: "REMOVAL.--Desiring a more central location for transacting my business, I have removed my office to No. 17 Merchants Exchange." Where? One says to West Troy, New York; another to Patterson, New Jersey; another to Bronxville, New York; another, to Salem, New-York, and so on! It is a new thing to find how central all those places are. Undeveloped metropolises seem to exist in every corner. Well, the slip ends with a notice that in future letters must be directed to the new place. Next, as to substance. The six letters all tell the same story. They are each the second letter; the first one having been sent to the same person, and having contained a lottery-ticket, as a gift of love or free charity. This second letter is the one which is expected to "fetch." It says in substance: "Your ticket has drawn a prize of $200,"--the letters all name the same amount--"but you didn't pay for it; and therefore are not entitled to it. Now send me $10 and I will cheat the lottery-man by altering the post-mark of your letter so that the money shall seem to have been sent before the lottery was drawn. This forgery will enable me to get the $200, which I will send you." How cunning that is! It is exactly calculated to hit the notions of a vulgar, ignorant, lazy, greedy, and unprincipled bumpkin. Such a fellow would see just far enough into the millstone to be tickled at the idea of cheating those lottery fellows. And the knave ends his letter with one more touch most delicately adapted to make Master Bumpkin feel certain that his cash is coming. He says, "Be sure to show your prize to all your friends, so as to make them buy tickets at my office."