| http://www.w3.org/ns/prov#value | - ounce in weight, shall bedeemed a singlo letter; and every additional weight of half an ounce, or additionalweight of less than half an ounce, shall bocharged with an additional single postage;and upon all letters passing through or inthe mail of the United Slates, exceptingsuch as are to or from foreign country,the postago as above specified shall bo prepaid, except upon letters and packages adJ
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