Postal Regulations of the U.S. as Amended. FIRST CLASS MAIL MATTER.Letters.This class includes letters, and anything of which the postmaster cannot ascertain the contents without destroying the wrapper, or anything unsealed which may be wholly or partly in writingexcept manuscript for publication accompanied by proof sheets. Postage, two cents each half ounce, or for each fraction above half an ounce. On local or drop letters, at free delivery offices, two cents. At offices where no free delivery by carriers, one cent. SECOND CLASS.Regular Publications.This class includes all newspapers, periodicals, or matter exclusively in print and regularly issued at stated periods from a known office of publication or news agency. Postage, two cents a pound or fraction thereof. THIRD CLASS.Miscellaneous Printed Matter. Mailable matter of the third class includes printed books, transient newspapers and periodicals, circulars and other matter wholly in print (not of the second class), proof sheets and manuscript accompanying the same, and postage shall be paid at the rate of one cent for each two ounces or fractional part thereof, and shall fully be prepaid by postage stamps affixed to said matter. All packages of matter of the third class must be so wrapped or enveloped that their contents may be readily and thoroughly examined by postmasters without destroying the wrappers. FOURTH CLASS.Merchandise, Samples, etc.Mail-able matter of the fourth class includes all matter not embraced in the first, second and third classes, which is not in its form or nature liable to destroy, deface or otherwise damage the contents of the mail-bag, or harm the person of anyone engaged in the postal service. All matter of the fourth class is subject to a postage charge at the rate of one cent an ounce or fraction thereof, to be paid by stamps affixed. MONEY ORDERS.Orders not over $10, 8 cents; $10 to $15,10 cents; $15 to $30, 15 cents; $30 to $40, 20 cents; $40to $50, 25 cents; $50 to $60, 80 cents; $60 to$70,35 cents; $70 to $80, 40 cents; $80 to $100, 45 cents. Postmasters cannot issue more than three orders to the same person in one day, in favor of the same payee, at the same office. N. B.Postal orders or notes under five dollars are issued without corresponding advices, and, when duly receipted, are payable at any money order office in the United States, selected by the bearer. The fee is three cents for each order. Postal notes are payable to bearer when presented at office of issue. The government is not liable after a note has once been paid. Postal notes are invalid at expiration of three calendar months from last day of month of issue. POSTAL CARDS.Postal cards are sold at a fixed rate of one and two cent (for foreign) each, in any quantity. Unclaimed postal cards are never returned to the writer. Anything pasted on or attached to a postal card subjects it to letter postage. FOREIGN POST AGE.Canadaletters 2 cts.; and 5 cents on all letters to all countries belonging to the " Universal